media: tegra: camera: fix embedded data error

media: tegra: camera: fix embedded data error

Consider the case like HDMI input bridge. There
is no default modes from device tree. It's no
need to allocate memory for embedded data.

bug 200303250

Change-Id: I64efc6a1a81bfb6e6da6912f0cb413739caaf70c
Reviewed-on: http://git-master/r/1478950
Signed-off-by: Ahung Cheng <ahcheng@nvidia.com>
(cherry picked from commit 9a82905d7de752dda320f4d84133c5850a856b65)
Reviewed-on: http://git-master/r/1495750
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>