ARM: Fix vixl related branch issue in JNI.

Fix VIXL asserts in EncodeLabelFor in JNI macro assembler when
label is out of range of 16-bit branch (now a veneer is correctly
used).

bug:32545704

Test: ART_USE_VIXL_ARM_BACKEND=true m test-art-host
Test: ART_USE_VIXL_ARM_BACKEND=true m test-art-target
Change-Id: Ie6401394cf364daeaaf107b42275997d2edf5b6d
3 files changed