UAPI: Alter the S390 asm include guards to be recognisable by the UAPI splitter

Alter some of the S390 asm include guards to fit a pattern that the UAPI
splitter recognises.

Signed-off-by: David Howells <dhowells@redhat.com>

arch/s390/include/asm/chpid.h

@@ -6,7 +6,7 @@
  */
 
 #ifndef _ASM_S390_CHPID_H
-#define _ASM_S390_CHPID_H _ASM_S390_CHPID_H
+#define _ASM_S390_CHPID_H
 
 #include <linux/string.h>
 #include <linux/types.h>

arch/s390/include/asm/itcw.h

@@ -6,7 +6,7 @@
  */
 
 #ifndef _ASM_S390_ITCW_H
-#define _ASM_S390_ITCW_H _ASM_S390_ITCW_H
+#define _ASM_S390_ITCW_H
 
 #include <linux/types.h>
 #include <asm/fcx.h>