[RTEMS] Add Cortex-M7 multilib for FPU support

gcc/ChangeLog

	* config/arm/t-rtems: Add cortex-m7/fpv5-d16 multilib.

From-SVN: r232414

gcc/ChangeLog

+2016-01-15  Sebastian Huber  <sebastian.huber@embedded-brains.de>
+
+	* config/arm/t-rtems: Add cortex-m7/fpv5-d16 multilib.
+
 2016-01-15  Ilya Enkovich  <enkovich.gnu@gmail.com>
 
 	* config/i386/i386.c (ix86_expand_branch): Don't split

gcc/config/arm/t-rtems

 # Custom RTEMS multilibs for ARM
 
-MULTILIB_OPTIONS  = mbig-endian mthumb march=armv6-m/march=armv7-a/march=armv7-r/march=armv7-m mfpu=neon/mfpu=vfpv3-d16/mfpu=fpv4-sp-d16 mfloat-abi=hard
-MULTILIB_DIRNAMES = eb thumb armv6-m armv7-a armv7-r armv7-m neon vfpv3-d16 fpv4-sp-d16 hard
+MULTILIB_OPTIONS  = mbig-endian mthumb march=armv6-m/march=armv7-a/march=armv7-r/march=armv7-m/mcpu=cortex-m7 mfpu=neon/mfpu=vfpv3-d16/mfpu=fpv4-sp-d16/mfpu=fpv5-d16 mfloat-abi=hard
+MULTILIB_DIRNAMES = eb thumb armv6-m armv7-a armv7-r armv7-m cortex-m7 neon vfpv3-d16 fpv4-sp-d16 fpv5-d16 hard
 
 # Enumeration of multilibs
 
@@ -16,5 +16,6 @@ MULTILIB_REQUIRED += mthumb/march=armv7-a
 MULTILIB_REQUIRED += mthumb/march=armv7-r/mfpu=vfpv3-d16/mfloat-abi=hard
 MULTILIB_REQUIRED += mthumb/march=armv7-r
 MULTILIB_REQUIRED += mthumb/march=armv7-m/mfpu=fpv4-sp-d16/mfloat-abi=hard
+MULTILIB_REQUIRED += mthumb/mcpu=cortex-m7/mfpu=fpv5-d16/mfloat-abi=hard
 MULTILIB_REQUIRED += mthumb/march=armv7-m
 MULTILIB_REQUIRED += mthumb