Make the Thumb2 disassembler handle more 32-bit instructions:

  A5.3.3 Data processing (plain binary immediate)

These use mostly twelve bit literals, but there are also bitfield
and saturated add primitives.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2534 b42882b7-edfa-0310-969c-e2dbd0fdcd60