s390/exceptions: sort exception table at build time

Follow x86 and MIPS and sort the main exception table at build time.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/scripts/sortextable.c b/scripts/sortextable.c
index 1ca9ceb..6acf834 100644
--- a/scripts/sortextable.c
+++ b/scripts/sortextable.c
@@ -247,6 +247,7 @@
 	case EM_X86_64:
 		custom_sort = sort_x86_table;
 		break;
+	case EM_S390:
 	case EM_MIPS:
 		break;
 	}  /* end switch */