arm: tegra: prioritize board-id based panel init

arm: tegra: prioritize board-id based panel init

If display board id has been specified by user, it is better
to directly initialize that particular panel instead of
searching for panels which are enabled in DT.

bug 200140014

Change-Id: I2bf2edaf96eee9a7f45ee5f735e475a71ec62c00
Signed-off-by: Naveen Kumar S <nkumars@nvidia.com>
Reviewed-on: http://git-master/r/1010459
(cherry picked from commit bcf25ac5f9a5357772fd64fa8b7e8f0b0eb50c99)
Reviewed-on: http://git-master/r/1026237
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>