Revert "[media] rcar_vin: call g_std() instead of querystd()"

As pointed by Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
this patch depends on two adv7180 patches that got rejected.

This reverts commit f00ae754.

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