Disabled cellSailPlayerAddDescriptor, added 0x10c to GetRegBySPR and cellGcmSys fixes

Adding 0x10c to GetRegBySPR should increase game compatibility for about ~6 games that previously got stuck trying to obtain that SPR.
Should be:
```
case 0x10C: return CPU.TBL;
case 0x10D: return CPU.TBH;
```