media: rkisp1: debug: Move resizer register dump to debugfs

The debugfs support already includes support to dump core and ISP
registers. Move the resizer register dump there too to make the
userspace interface consistent.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>