x86: fix arch/x86/kernel/test_nx.c modular build bug

fix this modular build bug:

>   CC [M]  arch/x86/kernel/test_nx.o
> {standard input}: Assembler messages:
> {standard input}:58: Error: cannot represent relocation type BFD_RELOC_64
> {standard input}:59: Error: cannot represent relocation type BFD_RELOC_64
> make[2]: *** [arch/x86/kernel/test_nx.o] Error 1
> make[1]: *** [arch/x86/kernel] Error 2
Reported-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/test_nx.c

@@ -91,8 +91,13 @@ static noinline int test_address(void *address)
 		".previous\n"
 		".section __ex_table,\"a\"\n"
 		"       .align 8\n"
+#ifdef CONFIG_X86_32
+		"	.long 0b\n"
+		"	.long 2b\n"
+#else
 		"	.quad 0b\n"
 		"	.quad 2b\n"
+#endif
 		".previous\n"
 		: [rslt] "=r" (result)
 		: [fake_code] "r" (address), [zero] "r" (0UL), "0" (result)