Disassemble Thumb2 shifts and more VFP instructions.

Disassemble Thumb2 instructions LSL, LSR, ASR, ROR and VFP
instructions VABS, VADD, VSUB, VMOV, VMUL, VNMUL, VDIV.

Clean up disassembly of VCMP, VCMPE, VNEG and VSQRT. These
could have been erroneously used for other insns (VSQRT for
VMOV was encountered) and one VSQRT branch was unreachable.

Remove duplicate VMOV opcodes from compiler.

Change-Id: I160a1e3e4b6eabb6a5101ce348ffd49c0573257d