MIPS: Do not generate micromips code for the no-smartmips-lwxs.c testcase

The LWXS instruction is part of the micromips ISA which means it is
valid to generate it for the no-smartmips-lwxs.c testcase.

testsuite/
	* gcc.target/mips/no-smartmips-lwxs.c: Change NOMIPS16 to
	NOCOMPRESSION.

From-SVN: r225519

gcc/testsuite/ChangeLog

+2015-07-07  Andrew Bennett  <andrew.bennett@imgtec.com>
+
+	* gcc.target/mips/no-smartmips-lwxs.c: Change NOMIPS16 to
+	NOCOMPRESSION.
+
 2015-07-07  Richard Biener  <rguenther@suse.de>
 
 	* gcc.dg/vect/vect-over-widen-3-big-array.c: Adjust.

gcc/testsuite/gcc.target/mips/no-smartmips-lwxs.c

 /* { dg-do compile } */
 /* { dg-options "-mno-smartmips" } */
 
-NOMIPS16 int scaled_indexed_word_load (int a[], int b)
+NOCOMPRESSION int scaled_indexed_word_load (int a[], int b)
 {
   return a[b];
 }