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

[Przemyslaw Wirkus]

Hi,
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.

gcc/ChangeLog:
2020-01-10  Przemyslaw Wirkus  <przemyslaw.wir...@arm.com>

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

Ok for gcc-9-branch?

kind regards
Przemyslaw Wirkus
diff --git a/gcc/config/arm/t-multilib b/gcc/config/arm/t-multilib
index 
dc97c8f09fb0b7f53520432e1a174adfce1bf6af..d5ee537193f2416909516c563b9848a79dabb1bf
 100644
--- a/gcc/config/arm/t-multilib
+++ b/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.