Builtins/ARM: __clear_cache doesn't seem to have a consistent prototype, declare
the builtin as void __clear_cache(...) to workaround this, which appears to
match what GCC does.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108487 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/builtins-arm.c b/test/CodeGen/builtins-arm.c
index 546f57a..09df1ef 100644
--- a/test/CodeGen/builtins-arm.c
+++ b/test/CodeGen/builtins-arm.c
@@ -9,4 +9,4 @@
 	__clear_cache(a,b);
 }
 
-// CHECK: call void @__clear_cache
+// CHECK: call {{.*}} @__clear_cache