prcmu-dbg: write registers entry

Some regisiters are controlled by hardware
Failed to write
prcmu-dbg: rename prcmu registers entry

I'm doing some experiments about this recently.

Signed-off-by: cocafe <cocafehj@gmail.com>
prcmu-dbg: Update debug interface
Signed-off-by: cocafe <cocafehj@gmail.com>
prcmu-dbg: Fix text style
Signed-off-by: cocafe <cocafehj@gmail.com>