[Mips] Add test to check translation MIPS triples to cpu and float abi
options.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@200080 91177308-0d34-0410-b5e6-96231b3b80d8
[Mips] Add support for mips64el-linux-android triple.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@200081 91177308-0d34-0410-b5e6-96231b3b80d8