MIPS: Reintroduce hand-written rosalloc entrypoints

Reintroduced art_quick_alloc_object_resolved_rosalloc and added
art_quick_alloc_object_initialized_rosalloc for MIPS32 and MIPS64.

Test: booted MIPS32 and MIPS64 in QEMU
Test: mma test-art-target on CI20 (MIPS32R2)
Test: mma test-art-target in QEMU (MIPS64R6)

Change-Id: I51c7d0629fd005e61f93cedd3989c53efc5a90e5