Cherry-picked commits: e93ebb35 Add support for DT_MIPS_RLD_MAP2 tag to gdb 7.9.1 b28ecf85 Add support for MIPS R6 and MSA to gdb 7.9.1 b711aa82 Add Unix domain socket support to gdbserver 7.9.1 Change-Id: I4dd0969c1a6f847fd5b11b1206c7bd6ef1f30137