[PATCH] s390: cleanup Kconfig

Sanitize some s390 Kconfig options.  We have ARCH_S390, ARCH_S390X,
ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT.  Replace these 6 options by
S390, 64BIT and COMPAT.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index 506a33b..a9566bc 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -143,7 +143,7 @@
 	rx = (unsigned long) parameter;
 	ry = (unsigned long) func;
 	__asm__ __volatile__(
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 		"   sam31\n" // switch to 31 bit
 		"   diag    %0,%1,0x64\n"
 		"   sam64\n" // switch back to 64 bit