[media] siano: replace sms_log() by pr_debug()

Despite its name, those functions are acutally debug
prints for the IR part of the driver. So, properly
map them using pr_debug()

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --cc drivers/media/common/siano/smscoreapi.h
Simple merge

diff --cc drivers/media/common/siano/smsir.c
Simple merge