[X86][Driver] Try to fix the test msse2avx.c on non-X86 target

The test was added in https://github.com/llvm/llvm-project/pull/96860
diff --git a/clang/test/Driver/msse2avx.c b/clang/test/Driver/msse2avx.c
index 37ba6f3..a63ac9a 100644
--- a/clang/test/Driver/msse2avx.c
+++ b/clang/test/Driver/msse2avx.c
@@ -1,7 +1,7 @@
-// RUN: %clang -### -c -march=x86-64 -Xassembler -msse2avx %s 2>&1 | FileCheck  %s
-// RUN: %clang -### -c -march=x86-64 -x assembler -Xassembler -msse2avx %s 2>&1 | FileCheck %s
+// RUN: %clang -### -c -target x86_64 -march=x86-64 -Xassembler -msse2avx %s 2>&1 | FileCheck  %s
+// RUN: %clang -### -c -target x86_64 -march=x86-64 -x assembler -Xassembler -msse2avx %s 2>&1 | FileCheck %s
 
 // CHECK: "-msse2avx"
 
-// RUN: not %clang -### -c --target=aarch64 -march=armv8a -msse2avx %s 2>&1 | FileCheck --check-prefix=ERR %s
+// RUN: not %clang -### -c -target aarch64 -march=armv8a -msse2avx %s 2>&1 | FileCheck --check-prefix=ERR %s
 // ERR:   error: unsupported option '-msse2avx' for target 'aarch64'