kernel: add lzma support for arm cpu.

This patch appears to be lost beetween 2.6.32 and 2.6.33.
    
Thank you Maddes for the patch.
    
This helps making orion work with kernel 2.6.34.
closes  #7377.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21622 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic-2.6/patches-2.6.34/055-lzma_arm_kernel.patch

@@ -0,0 +1,57 @@
+From d0f226a0f104c7d1da1d215b8013359273e39e18 Mon Sep 17 00:00:00 2001
+From: Albin Tonnerre <albin.tonnerre@free-electrons.com>
+Date: Fri, 16 Oct 2009 16:17:22 +0200
+Subject: [PATCH] Add LZMA decompression on ARM
+
+
+Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
+---
+ arch/arm/Kconfig                      |    1 +
+ arch/arm/boot/compressed/Makefile     |    1 +
+ arch/arm/boot/compressed/misc.c       |    4 ++++
+ arch/arm/boot/compressed/piggy.lzma.S |    6 ++++++
+ 4 files changed, 12 insertions(+), 0 deletions(-)
+ create mode 100644 arch/arm/boot/compressed/piggy.lzma.S
+
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -21,6 +21,7 @@ config ARM
+ 	select HAVE_GENERIC_DMA_COHERENT
+ 	select HAVE_KERNEL_GZIP
+ 	select HAVE_KERNEL_LZO
++	select HAVE_KERNEL_LZMA
+ 	select HAVE_PERF_EVENTS
+ 	select PERF_USE_VMALLOC
+ 	help
+--- a/arch/arm/boot/compressed/Makefile
++++ b/arch/arm/boot/compressed/Makefile
+@@ -65,6 +65,7 @@ SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/
+ 
+ suffix_$(CONFIG_KERNEL_GZIP) = gzip
+ suffix_$(CONFIG_KERNEL_LZO)  = lzo
++suffix_$(CONFIG_KERNEL_LZMA) = lzma
+ 
+ targets       := vmlinux vmlinux.lds \
+ 		 piggy.$(suffix_y) piggy.$(suffix_y).o \
+--- a/arch/arm/boot/compressed/decompress.c
++++ b/arch/arm/boot/compressed/decompress.c
+@@ -40,6 +40,10 @@ extern void error(char *);
+ #include "../../../../lib/decompress_unlzo.c"
+ #endif
+ 
++#ifdef CONFIG_KERNEL_LZMA
++#include "../../../../lib/decompress_unlzma.c"
++#endif
++
+ void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x))
+ {
+ 	decompress(input, len, NULL, NULL, output, NULL, error);
+--- /dev/null
++++ b/arch/arm/boot/compressed/piggy.lzma.S
+@@ -0,0 +1,6 @@
++	.section .piggydata,#alloc
++	.globl	input_data
++input_data:
++	.incbin	"arch/arm/boot/compressed/piggy.lzma"
++	.globl	input_data_end
++input_data_end: