ARM: VIXL32: Fix "Align allocation entrypoints..".

Add missing changes for VIXL backend to
https://android-review.googlesource.com/#/c/330124/.

Test: m test-art-host
Test: m test-art-target
Change-Id: Ic8383a7a426cbe8501e12838e9728fc3f359f03d
1 file changed