V4L/DVB (11474): gspca - m5602-po1030: Fix sensor probing.

The po1030 read sensor are currently returning the contents of the address+1 fix the probing of the sensor to cope with this. Obviously this needs to be tracked down and fixed.

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>