debug/gdb: disable nls when CT_TOOLCHAIN_ENABLE_NLS is not selected

Signed-off-by: Zhenqiang Chen <zhenqiang.chen@linaro.org>
Message-Id: <CACgzC7Bn+WpbgDruNeZ4s1z0x1deF6n4YyS22Dy7p_d1fFDVCA@mail.gmail.com>
PatchWork-Id: 191042

 #!/bin/sh

 # Needed for systems without gettext

 $* -xc -o /dev/null - > /dev/null 2>&1 << EOF

 #include <libintl.h>

 int main()

 {

 	gettext("");

 	return 0;

 }

 EOF

 if [ ! "$?" -eq "0"  ]; then

 	echo -DKBUILD_NO_NLS;

 fi