[llvm][AArch64] Test warning for clobbering w19 with base frame pointer

The test added in 739b69e only checked
that X19 triggers the explanation, also check W19.

Author: DavidSpickett

llvm/test/CodeGen/AArch64/inline-asm-clobber-base-frame-pointer.ll

@@ -4,12 +4,14 @@
 ; RUN: llc <%s -mtriple=aarch64-none-eabi 2>&1 | FileCheck %s
 
 ; CHECK: warning: inline asm clobber list contains reserved registers: X19
-; CHECK: note: X19 is used as the frame base pointer register.
+; CHECK-NEXT: note: Reserved registers on the clobber list
+; CHECK-NEXT: note: X19 is used as the frame base pointer register.
+; CHECK-NEXT: note: X19 is used as the frame base pointer register.
 
 define void @alloca(i64 %size) {
 entry:
   %a = alloca i128, i64 %size, align 64
-  call void asm sideeffect "nop", "~{x19}"()
+  call void asm sideeffect "nop", "~{x19},~{w19}"()
   ret void
 }