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: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
                ".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)