From: Matheus Ferst <matheus.ferst@eldorado.org.br>
Implement the following PowerISA v3.1 instructions:
mtvsrbm: Move to VSR Byte Mask
mtvsrhm: Move to VSR Halfword Mask
mtvsrwm: Move to VSR Word Mask
mtvsrdm: Move to VSR Doubleword Mask
mtvsrqm: Move to VSR Quadword Mask
mtvsrbmi: Move to VSR Byte Mask Immediate
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
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v2:
- Applied rth suggestions to do_mtvsrm and trans_MTVSRBMI