Add new MISC vector Iops to memcheck/tests/vbit-test/irops.c.

memcheck/tests/vbit-test fails with unknown opcode after introduction
of new Iops for AVX2, BMI, FMA support #317506

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13347 a5019735-40e9-0310-863c-91ae7b9d1cf9