clang/test/Driver/stackrealign.c REQUIRES clang-driver.

GCC driver, for example cygwin, both "-mstackrealign" "-mno-stackrealign" are passed.

llvm-svn: 247496
diff --git a/clang/test/Driver/stackrealign.c b/clang/test/Driver/stackrealign.c
index 70de40f..217be7a 100644
--- a/clang/test/Driver/stackrealign.c
+++ b/clang/test/Driver/stackrealign.c
@@ -1,6 +1,7 @@
 // RUN: %clang -### %s 2>&1 | FileCheck %s -check-prefix=NO-REALIGN
 // RUN: %clang -### -mno-stackrealign -mstackrealign %s 2>&1 | FileCheck %s -check-prefix=REALIGN
 // RUN: %clang -### -mstackrealign -mno-stackrealign %s 2>&1 | FileCheck %s -check-prefix=NO-REALIGN
+// REQUIRES: clang-driver
 
 // REALIGN: -mstackrealign
 // NO-REALIGN-NOT: -mstackrealign