powerpc/boot: Fix missing crc32poly.h when building with KERNEL_XZ

Origin: https://patchwork.ozlabs.org/patch/963258/

After commit faa16bc404d7 ("lib: Use existing define with
polynomial") the lib/xz/xz_crc32.c includes a header from include/linux
directory thus any other user of this code should define proper include
path.

This fixes the build error on powerpc with CONFIG_KERNEL_XZ:

    In file included from ../arch/powerpc/boot/../../../lib/decompress_unxz.c:233:0,
                     from ../arch/powerpc/boot/decompress.c:42:
    ../arch/powerpc/boot/../../../lib/xz/xz_crc32.c:18:29: fatal error: linux/crc32poly.h: No such file or directory

Reported-by: Michal Kubecek <mkubecek@suse.cz>
Fixes: faa16bc404d7 ("lib: Use existing define with polynomial")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Michal Kubecek <mkubecek@suse.cz>
Gbp-Pq: Topic bugfix/powerpc
Gbp-Pq: Name powerpc-boot-fix-missing-crc32poly.h-when-building-with-kernel_xz.patch

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index d32d95aea5d6f4c3e14d79f0e36923c332776078..ff9313441141181f9b796e5ac0f87f6e9b5a1e19 100644 (file)
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -77,7 +77,7 @@ BOOTCFLAGS    += -fno-stack-protector
 endif
 
 BOOTCFLAGS     += -include $(srctree)/include/linux/compiler_attributes.h
-BOOTCFLAGS     += -I$(objtree)/$(obj) -I$(srctree)/$(obj)
+BOOTCFLAGS     += -I$(objtree)/$(obj) -I$(srctree)/$(obj) -I$(srctree)/include
 
 DTC_FLAGS      ?= -p 1024