media: coda: debug output when setting visible size via crop selection

In addition to the S_FMT debug output, S_SELECTION (SEL_TGT_CROP) is
relevant to determine encoded size. Add debug output for it.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>