Fix Camel style for cva6 parameters

[JeanRochCoulon]

Currently the Camel style of parameters is not homogeneous. Need to fix it. Some examples:

• XF16ALT should be renamed XF16Alt ?
• RVZCB should be renamed RVZcb ?
• RVZCMP should be remamed RVZcmp ?
• XFVec
• CvxifEn
• RVZiCond should be remaned Zicond ?
• RVZicntr
• RVZihpm

[JeanRochCoulon]

@ASintzoff