MIPS32: Implement table-based packed switch

Test: booted MIPS32R2 in QEMU
Test: test-art-target-run-test-optimizing (MIPS32R2) on CI20
Test: booted MIPS64 (with 2nd arch MIPS32R6) in QEMU
Test: test-art-target-run-test-optimizing (MIPS32R6) in QEMU
Test: test-art-host-gtest

Change-Id: I2e1a65ff1ba9406b84351ba7998f853b1ce4aef9
9 files changed