kernel: when using --gc-sections, add --sort-section=name to get a more stable sorting order

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

Backport of r41951

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42009 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic/patches-3.10/220-gc_sections.patch

 From: Felix Fietkau <nbd@openwrt.org>
 
-use -ffunction-sections, -fdata-sections and --gc-sections
+use -ffunction-sections, -fdata-sections and --gc-sections --sort-section=name
 
 In combination with kernel symbol export stripping this significantly reduces
 the kernel image size. Used on both ARM and MIPS architectures.
@@ -17,7 +17,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe
  cflags-y			+= -msoft-float
 -LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
-+LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections
++LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections --sort-section=name
  KBUILD_AFLAGS_MODULE		+= -mlong-calls
  KBUILD_CFLAGS_MODULE		+= -mlong-calls
  
@@ -423,7 +423,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
  LDFLAGS_vmlinux	+= --be8
  endif
-+LDFLAGS_vmlinux += --gc-sections
++LDFLAGS_vmlinux += --gc-sections --sort-section=name
  
  OBJCOPYFLAGS	:=-O binary -R .comment -S
  GZFLAGS		:=-9

target/linux/generic/patches-3.10/302-mips_no_branch_likely.patch

@@ -7,5 +7,5 @@
 -cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe
 +cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely
  cflags-y			+= -msoft-float
- LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections
+ LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections --sort-section=name
  KBUILD_AFLAGS_MODULE		+= -mlong-calls

target/linux/generic/patches-3.10/305-mips_module_reloc.patch

@@ -3,7 +3,7 @@
 @@ -90,8 +90,13 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin
  cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely
  cflags-y			+= -msoft-float
- LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections
+ LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections --sort-section=name
 +ifdef CONFIG_64BIT
  KBUILD_AFLAGS_MODULE		+= -mlong-calls
  KBUILD_CFLAGS_MODULE		+= -mlong-calls