kvx: enable magic immediates for integer multiply-accumulate and CMOVE*

Affected instructions:
 - alu unit:
    cmovewp cmovehq
 - mau unit:
     maddwdp madduwdp maddsuwdp mma msbfwdp msbfuwdp
     msbfsuwdp mms mulwdp muluwdp mulsuwdp mm

opcodes/ChangeLog:

	* kvx-opc.c (struct kvxopc): Regenerate.

gas/ChangeLog:

	* config/kvx-parse.h: Regenerate.