Dummy instruction fixes
Created by: halfdan-dolva
Addressed issues pointed out in #92 (closed) :
- Updated dummy instruction assertions to not have special case around writes.
- Updated dummy instruction insertion counter to reset when insertion frequency controls are updated.
- Made dummy instruction part of register file support REGFILE_NUM_WRITE_PORTS
Signed-off-by: Halfdan Bechmann halfdan.bechmann@silabs.com