In the platform header file, the subdev_info structure name has been changed
to vpif_subdev_info. Update this change in the driver too.

Applies to v4l-dvb repository.
Signed-off-by: NChaithrika U S <chaithrika@ti.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

mutex_lock_interruptible return value has to be handled properly to indicate
the status to the higher layers of the kernel.
Signed-off-by: NChaithrika U S <chaithrika@ti.com>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Adds the VPIF display driver and the associated header file.
Signed-off-by: NManjunath Hadli <mrh@ti.com>
Signed-off-by: NBrijesh Jadav <brijesh.j@ti.com>
Signed-off-by: NChaithrika U S <chaithrika@ti.com>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>