[openwrt/openwrt] armvirt: disable LD dead code elimination on ARM32

[LEDE Commits]

ynezz pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/3f72d24a04f28c3e7bdf625dc4a9d6771ff0a2dd

commit 3f72d24a04f28c3e7bdf625dc4a9d6771ff0a2dd
Author: Mathew McBride <matt at traverse.com.au>
AuthorDate: Wed Sep 28 15:47:30 2022 +1000

    armvirt: disable LD dead code elimination on ARM32
    
    This interferes with the generation of the EFI stub section for
    ARM32. As this target is not size constrained, disable the dead code
    data elimination hack.
    
    Signed-off-by: Mathew McBride <matt at traverse.com.au>
    (23.05 version of eb0e61285d4da910317e082de559337a305fa1dc)
---
 .../221-armvirt-disable-gc_sections.patch          | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/target/linux/armvirt/patches-5.15/221-armvirt-disable-gc_sections.patch b/target/linux/armvirt/patches-5.15/221-armvirt-disable-gc_sections.patch
new file mode 100644
index 0000000000..ac90a6698d
--- /dev/null
+++ b/target/linux/armvirt/patches-5.15/221-armvirt-disable-gc_sections.patch
@@ -0,0 +1,23 @@
+From b77c0ecdc7915e5c5c515da1aa6cfaf6f4eb8351 Mon Sep 17 00:00:00 2001
+From: Mathew McBride <matt at traverse.com.au>
+Date: Wed, 28 Sep 2022 16:39:31 +1000
+Subject: [PATCH] arm: disable code size reduction measures
+ (gc-sections,-f*-sections)
+
+This interferes with the EFI boot stub on armv7l.
+
+Signed-off-by: Mathew McBride <matt at traverse.com.au>
+---
+ arch/arm/Kconfig | 1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -117,7 +117,6 @@ 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