[PATCH] lib/Kconfig.debug: add ARCH dependency for FUNCTION_ALIGNMENT option

[Feng Tang]

0Day robots reported there is compiling issue for 'csky' ARCH
when CONFIG_DEBUG_FORCE_DATA_SECTION_ALIGNED is enabled:

"
All errors (new ones prefixed by >>):

   {standard input}: Assembler messages:
>> {standard input}:2277: Error: pcrel offset for branch to .LS000B too far (0x3c)
"

Which has been discussed in [1]. And as there is no solution for csky
yet, add some dependency for this config to limit it to several ARCHs
which have no compiling issue so far.

[1]. https://www.spinics.net/lists/linux-kbuild/msg30298.html

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Feng Tang <feng.tang@xxxxxxxxx>
---
 lib/Kconfig.debug | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 14b89aa37c5c..39298958ad3a 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -417,6 +417,7 @@ config SECTION_MISMATCH_WARN_ONLY
 
 config DEBUG_FORCE_FUNCTION_ALIGN_64B
 	bool "Force all function address 64B aligned" if EXPERT
+	depends on PPC || ARM || X86
 	help
 	  There are cases that a commit from one domain changes the function
 	  address alignment of other domains, and cause magic performance
-- 
2.27.0