[ARM][testsuite] Do not override -mcpu in no-volatile-in-it.c

    * gcc.target/arm/no-volatile-in-it.c: Skip if -mcpu is overriden.

From-SVN: r225892

gcc/testsuite/ChangeLog

+2015-07-16  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* gcc.target/arm/no-volatile-in-it.c: Skip if -mcpu is overriden.
+
 2015-07-16  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR rtl-optimization/66626

gcc/testsuite/gcc.target/arm/no-volatile-in-it.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb2_ok } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-march=*" "-mcpu=*" } { "-mcpu=cortex-m7" } } */
 /* { dg-options "-Os -mthumb -mcpu=cortex-m7" } */
 
 int