arm: fix v[78]-r multilibs when configured with --with-multlib-list=aprofile

When gcc for Arm is configured with --with-multilib-list=aprofile a
misplaced endif directive in the makefile was causing the arm->thumb
mapping for multilibs to be omitted from the reuse rules.  This
resulted in the default multilib being picked rather than the thumb2
opimized version.

	* config/arm/t-multilib: Use arm->thumb multilib reuse rules
	on a-profile.

From-SVN: r279128

gcc/ChangeLog

+2019-12-09  Richard Earnshaw  <rearnsha@arm.com>
+
+	* config/arm/t-multilib: Use arm->thumb multilib reuse rules
+	on a-profile.
+
 2019-12-09  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* config/rs6000/rs6000.md (unnamed mfcr define_insn): Name this

gcc/config/arm/t-multilib

@@ -185,6 +185,8 @@ MULTILIB_MATCHES	+= march?armv7=march?armv8.5-a
 MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_5_a_simd_variants), \
 			     march?armv7+fp=march?armv8.5-a$(ARCH))
 
+endif		# Not APROFILE.
+
 # Use Thumb libraries for everything.
 
 MULTILIB_REUSE		+= mthumb/march.armv7/mfloat-abi.soft=marm/march.armv7/mfloat-abi.soft
@@ -198,4 +200,3 @@ MULTILIB_REUSE		+= $(foreach MODE, arm thumb, \
 			     $(foreach ARCH, armv7, \
 			       mthumb/march.$(ARCH)/mfloat-abi.soft=m$(MODE)/march.$(ARCH)/mfloat-abi.softfp))
 
-endif		# Not APROFILE.