V4L/DVB: staging:cx25821:fixes coding styles in cx25821-i2c.c

This is a patch to the cx25821-i2c.c file that fixes warning and errors found by checkpatch.pl tool

[mchehab@redhat.com: fix conflicts with changeset 2587a7ef7b8bc3c7db7c43659297b45b168922ab]
Signed-off-by:  <sai&lt;tsg321@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>