s390/hypfs: add hypfs header file to uapi 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

@@ -12,6 +12,7 @@ header-y += dasd.h
 header-y += debug.h
 header-y += errno.h
 header-y += fcntl.h
+header-y += hypfs.h
 header-y += ioctl.h
 header-y += ioctls.h
 header-y += ipcbuf.h