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, 29 deletions

diff --git a/target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch b/target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch
deleted file mode 100644
index 41271f9dfd..0000000000
--- a/target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-From 31a4e41820cdaad9d4c151beefe5ab0698f4865a Mon Sep 17 00:00:00 2001
-From: Fugang Duan <fugang.duan@nxp.com>
-Date: Thu, 15 Jun 2017 16:48:31 +0800
-Subject: [PATCH] MLK-15094 tty: serial: fsl_lpuart: check dma_tx_in_progress
- in callback
-
-There have a corner case that tx DMA .callback() is coming after
-.flush_buffer(), then .callback() should check dma_tx_in_progress
-flag and return in directly.
-
-Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
-Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
----
- drivers/tty/serial/fsl_lpuart.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
---- a/drivers/tty/serial/fsl_lpuart.c
-+++ b/drivers/tty/serial/fsl_lpuart.c
-@@ -505,6 +505,10 @@ static void lpuart_dma_tx_complete(void
- 	unsigned long flags;
- 
- 	spin_lock_irqsave(&sport->port.lock, flags);
-+	if (!sport->dma_tx_in_progress) {
-+		spin_unlock_irqrestore(&sport->port.lock, flags);
-+		return;
-+	}
- 
- 	dma_unmap_sg(sport->port.dev, sgl, sport->dma_tx_nents, DMA_TO_DEVICE);
-