JIT: Support for shift field in disassembler [issue 2465170]

Many Thumb2 instructions allow for an optional shift to be applied to
operand 2.  This cl enhances the disassembler to show a non-zero shift
in the dump output.

Change-Id: I6cbfec46cd45e3f2acc9553f880e80764a1eb65d
2 files changed