MIPS64: Implement HSelect

Test: mma test-art-host-gtest
Test: mma test-art-target-gtest in QEMU (MIPS64R6)
Test: ./testrunner.py --target --optimizing in QEMU (MIPS64R6)

Change-Id: I633fc479e0ca61b7d49b4c36fbe5db9a94da535d
5 files changed