selftests: x86: add 32bit build warnings for SUSE

In order to successfully build all these 32bit tests, these 32bit gcc
and glibc packages, named gcc-32bit and glibc-devel-static-32bit on SUSE,
need to be installed.

This patch added this information in warn_32bit_failure.

Signed-off-by: Geliang Tang <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>

tools/testing/selftests/x86/Makefile

···
 	echo "If you are using a Fedora-like distribution, try:";	\
 	echo "";							\
 	echo "  yum install glibc-devel.*i686";				\
+	echo "";							\
+	echo "If you are using a SUSE-like distribution, try:";		\
+	echo "";							\
+	echo "  zypper install gcc-32bit glibc-devel-static-32bit";	\
 	exit 0;
 endif