Include <sys/stat.h> if __x86_64__ is defined

	* sanitizer_common/sanitizer_platform_limits_linux.cc: Include
	<sys/stat.h>, instead of <asm/stat.h>, if __x86_64__ is defined.
	(struct___old_kernel_stat_sz): Don't check if __x86_64__ is defined.

From-SVN: r205736