s390/mem_detect: add missing include
Fix this allnoconfig build breakage:
arch/s390/boot/mem_detect.c: In function 'tprot':
arch/s390/boot/mem_detect.c:122:12: error: 'EFAULT' undeclared (first use in this function)
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/boot/mem_detect.c b/arch/s390/boot/mem_detect.c
index 65ae3c9..4cb771b 100644
--- a/arch/s390/boot/mem_detect.c
+++ b/arch/s390/boot/mem_detect.c
@@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
+#include <linux/errno.h>
#include <linux/init.h>
#include <asm/sclp.h>
#include <asm/sections.h>