treewide: remove files for building 5.10 kernel

All targets are bumped to 5.15. Remove the old 5.10 patches, configs
and files using:

  find target/linux -iname '*-5.10' -exec rm -r {} \;

Further, remove the 5.10 include.

Signed-off-by: Nick Hainke <vincent@systemli.org>

1 files changed, 0 insertions, 32 deletions

diff --git a/target/linux/realtek/patches-5.10/307-wdt-update-dependency-for-realtek-otto-wdt.patch b/target/linux/realtek/patches-5.10/307-wdt-update-dependency-for-realtek-otto-wdt.patch
deleted file mode 100644
index f92981340b..0000000000
--- a/target/linux/realtek/patches-5.10/307-wdt-update-dependency-for-realtek-otto-wdt.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-From b8fc5eecdc5d33cf261986436597b5482ab856da Mon Sep 17 00:00:00 2001
-From: Sander Vanheule <sander@svanheule.net>
-Date: Sun, 14 Nov 2021 19:45:32 +0100
-Subject: [PATCH] realtek: Backport Realtek Otto WDT driver
-
-Add patch submitted upstream to linux-watchdog and replace the MIPS
-architecture symbols. Requires one extra patch for the DIV_ROUND_*
-macros, which have moved to a different header since 5.10.
-
-Submitted-by: Sander Vanheule <sander@svanheule.net>
-Tested-by: Stijn Segers <foss@volatilesystems.org>
-Tested-by: Paul Fertser <fercerpav@gmail.com>
-Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
----
- drivers/watchdog/Kconfig                      | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
---- a/drivers/watchdog/Kconfig
-+++ b/drivers/watchdog/Kconfig
-@@ -997,10 +997,10 @@ config RTD119X_WATCHDOG
- 
- config REALTEK_OTTO_WDT
- 	tristate "Realtek Otto MIPS watchdog support"
--	depends on MACH_REALTEK_RTL || COMPILE_TEST
-+	depends on RTL83XX
- 	depends on COMMON_CLK
- 	select WATCHDOG_CORE
--	default MACH_REALTEK_RTL
-+	default RTL83XX
- 	help
- 	  Say Y here to include support for the watchdog timer on Realtek
- 	  RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout