kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 138 deletions

diff --git a/target/linux/generic/hack-5.4/220-arm-gc_sections.patch b/target/linux/generic/hack-5.4/220-arm-gc_sections.patch
deleted file mode 100644
index 14e2461797..0000000000
--- a/target/linux/generic/hack-5.4/220-arm-gc_sections.patch
+++ /dev/null
@@ -1,138 +0,0 @@
-From e3d8676f5722b7622685581e06e8f53e6138e3ab Mon Sep 17 00:00:00 2001
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 15 Jul 2017 23:42:36 +0200
-Subject: use -ffunction-sections, -fdata-sections and --gc-sections
-
-In combination with kernel symbol export stripping this significantly reduces
-the kernel image size. Used on both ARM and MIPS architectures.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-Signed-off-by: Jonas Gorski <jogo@openwrt.org>
-Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
----
- Makefile                          | 10 +++----
- arch/arm/Kconfig                  |  1 +
- arch/arm/boot/compressed/Makefile |  1 +
- arch/arm/kernel/vmlinux.lds.S     | 26 ++++++++--------
- arch/mips/Kconfig                 |  1 +
- arch/mips/kernel/vmlinux.lds.S    |  4 +--
- include/asm-generic/vmlinux.lds.h | 63 ++++++++++++++++++++-------------------
- 7 files changed, 55 insertions(+), 51 deletions(-)
-
---- a/arch/arm/Kconfig
-+++ b/arch/arm/Kconfig
-@@ -112,6 +112,7 @@ config ARM
- 	select HAVE_UID16
- 	select HAVE_VIRT_CPU_ACCOUNTING_GEN
- 	select IRQ_FORCED_THREADING
-+	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
- 	select MODULES_USE_ELF_REL
- 	select NEED_DMA_MAP_STATE
- 	select OF_EARLY_FLATTREE if OF
---- a/arch/arm/boot/compressed/Makefile
-+++ b/arch/arm/boot/compressed/Makefile
-@@ -108,6 +108,7 @@ ifeq ($(CONFIG_FUNCTION_TRACER),y)
- ORIG_CFLAGS := $(KBUILD_CFLAGS)
- KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
- endif
-+KBUILD_CFLAGS_KERNEL := $(patsubst -f%-sections,,$(KBUILD_CFLAGS_KERNEL))
- 
- # -fstack-protector-strong triggers protection checks in this code,
- # but it is being used too early to link to meaningful stack_chk logic.
---- a/arch/arm/kernel/vmlinux.lds.S
-+++ b/arch/arm/kernel/vmlinux.lds.S
-@@ -73,7 +73,7 @@ SECTIONS
- 	. = ALIGN(4);
- 	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
- 		__start___ex_table = .;
--		ARM_MMU_KEEP(*(__ex_table))
-+		KEEP(*(__ex_table))
- 		__stop___ex_table = .;
- 	}
- 
-@@ -100,24 +100,24 @@ SECTIONS
- 	}
- 	.init.arch.info : {
- 		__arch_info_begin = .;
--		*(.arch.info.init)
-+		KEEP(*(.arch.info.init))
- 		__arch_info_end = .;
- 	}
- 	.init.tagtable : {
- 		__tagtable_begin = .;
--		*(.taglist.init)
-+		KEEP(*(.taglist.init))
- 		__tagtable_end = .;
- 	}
- #ifdef CONFIG_SMP_ON_UP
- 	.init.smpalt : {
- 		__smpalt_begin = .;
--		*(.alt.smp.init)
-+		KEEP(*(.alt.smp.init))
- 		__smpalt_end = .;
- 	}
- #endif
- 	.init.pv_table : {
- 		__pv_table_begin = .;
--		*(.pv_table)
-+		KEEP(*(.pv_table))
- 		__pv_table_end = .;
- 	}
- 
---- a/arch/arm/kernel/vmlinux.lds.h
-+++ b/arch/arm/kernel/vmlinux.lds.h
-@@ -28,7 +28,7 @@
- #define PROC_INFO							\
- 		. = ALIGN(4);						\
- 		__proc_info_begin = .;					\
--		*(.proc.info.init)					\
-+		KEEP(*(.proc.info.init))				\
- 		__proc_info_end = .;
- 
- #define HYPERVISOR_TEXT							\
-@@ -39,11 +39,11 @@
- #define IDMAP_TEXT							\
- 		ALIGN_FUNCTION();					\
- 		__idmap_text_start = .;					\
--		*(.idmap.text)						\
-+		KEEP(*(.idmap.text))					\
- 		__idmap_text_end = .;					\
- 		. = ALIGN(PAGE_SIZE);					\
- 		__hyp_idmap_text_start = .;				\
--		*(.hyp.idmap.text)					\
-+		KEEP(*(.hyp.idmap.text))				\
- 		__hyp_idmap_text_end = .;
- 
- #define ARM_DISCARD							\
-@@ -86,12 +86,12 @@
- 	. = ALIGN(8);							\
- 	.ARM.unwind_idx : {						\
- 		__start_unwind_idx = .;					\
--		*(.ARM.exidx*)						\
-+		KEEP(*(.ARM.exidx*))					\
- 		__stop_unwind_idx = .;					\
- 	}								\
- 	.ARM.unwind_tab : {						\
- 		__start_unwind_tab = .;					\
--		*(.ARM.extab*)						\
-+		KEEP(*(.ARM.extab*))					\
- 		__stop_unwind_tab = .;					\
- 	}
- 
-@@ -102,14 +102,14 @@
- #define ARM_VECTORS							\
- 	__vectors_start = .;						\
- 	.vectors 0xffff0000 : AT(__vectors_start) {			\
--		*(.vectors)						\
-+		KEEP(*(.vectors))					\
- 	}								\
- 	. = __vectors_start + SIZEOF(.vectors);				\
- 	__vectors_end = .;						\
- 									\
- 	__stubs_start = .;						\
- 	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {		\
--		*(.stubs)						\
-+		KEEP(*(.stubs))						\
- 	}								\
- 	. = __stubs_start + SIZEOF(.stubs);				\
- 	__stubs_end = .;						\