[PATCH][ARM][Testsute] Skip thumb1 test in non-thumb1 target

[Joey Ye]

Fix the test case failed in ARM state.

        * gcc.target/arm/thumb1-imm.c: Skip it in non-thumb1 target

Index: gcc/testsuite/gcc.target/arm/thumb1-imm.c
===================================================================
--- gcc/testsuite/gcc.target/arm/thumb1-imm.c   (revision 186517)
+++ gcc/testsuite/gcc.target/arm/thumb1-imm.c   (working copy)
@@ -1,5 +1,7 @@
 /* Check for thumb1 imm [255-510] moves.  */
 /* { dg-require-effective-target arm_thumb1_ok } */
+/* { dg-options "-Os" } */
+/* { dg-skip-if "" { ! { arm_thumb1 } } } */
 
 int f()
 {