s390/uapi: sort header export list

Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/uapi/asm/Kbuild

@@ -30,16 +30,16 @@ header-y += ptrace.h
 header-y += qeth.h
 header-y += resource.h
 header-y += schid.h
+header-y += sclp_ctl.h
 header-y += sembuf.h
 header-y += setup.h
 header-y += shmbuf.h
+header-y += sie.h
 header-y += sigcontext.h
 header-y += siginfo.h
 header-y += signal.h
 header-y += socket.h
 header-y += sockios.h
-header-y += sclp_ctl.h
-header-y += sie.h
 header-y += stat.h
 header-y += statfs.h
 header-y += swab.h