* mips.h: Document new field descriptors +x, +X, +p, +P, +s, +S.
Update comment before MIPS16 field descriptors to mention MIPS16.
(OP_SH_BBITIND, OP_MASK_BBITIND): New bit mask and shift count for
BBIT.
(OP_SH_CINSPOS, OP_MASK_CINSPOS, OP_SH_CINSLM1, OP_MASK_CINSLM1):
New bit masks and shift counts for cins and exts.
* gas/mips/octeon.s, gas/mips/octeon.d: Add tests for baddu,
bbit*, cins*, dmul, pop, dpop, exts*, mtm*, mtp*, syncs, syncw,
syncws, vm3mulu, vm0 and vmulu.
* gas/mips/octeon-ill.s, gas/mips/octeon-ill.s: New test.
* gas/mips/mips.exp: Run it. Run octeon test with
run_dump_test_arches.