Frameworks/base: Support dex2oat cpu-set system property

Check dalvik.vm.dex2oat-cpu-set in AndroidRuntime and pass to ART
with "--cpu-set=" as a compiler option, if found.

Check dalvik.vm.image-dex2oat-cpu-set in AndroidRuntime and pass
to ART with "--cpu-set=" as an image compiler option, if found.

Bug: 141446571
Bug: 149395059
Test: manual

Change-Id: Ica6a39048292d3d43aeb58d25f79f1398a7d5a79
Merged-In: Ica6a39048292d3d43aeb58d25f79f1398a7d5a79
(cherry picked from commit 870ce3f6)