[PATCH] PPC: sstep.c: Add modsw, moduw instruction emulation

[PrasannaKumar Muralidharan]

> By the way, I missed mentioning previously: please use 'powerpc: '
> prefix for the subject, rather than PPC.

I will change it. Wondering how they are different.

>> Add modsw and moduw instruction emulation support to analyse_instr.
>
> And, it will be better if you can briefly describe what these functions
> do for the benefit of others.

Sure. I will add description.