adv7481: Add support for interlaced HDMI and CVBS input

Set active lines based on input standard returned by SD core.
Add vid parameter to sd_timings to return number of active lines
to user. Increase SDP_NUM_TRIES to lock stable input.
Return v4l2_field type of HDMI and CVBS INPUT to userspace.

Change-Id: Ifbde4ca32fad40bc3235fed0715c11854a8aa08c
Signed-off-by: Suprith Malligere Shankaregowda <supgow@codeaurora.org>