media: i.MX6: Fix MIPI CSI-2 LP-11 check

Bitmask for the MIPI CSI-2 data PHY status doesn't seem to be correct.
Fix it.

Signed-off-by: Krzysztof Ha?asa <khalasa@piap.pl>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>