pv.cplxconj decoding and tracing

Created by: Silabs-ArjanB

pv.cplxconj is documented correctedly. However based on the RTL comments and tracer outputs it seems as if pv.cplxconj.b and pv.cplxconj.h exist.

The tracer should be adapted to prevent adding the .b/.h suffix for the pv.cplxconj instruction.
The RTL (cv32e40p_decoder.sv) should be adapted to refer to pv.cplxconj instead of pv.cplxconj.h in its comments
The RTL (cv32e40p_decoder.sv) should be adapted to cause an illegal instruction exception for a 'pv.cplxconj instruction with bit 12 set to 1).