Added kms plugin to nvidia-logal configuration. Updated meta-tegra layer.
In updated meta-tegra layer there is added pkg-config file for nvidia drm library to pass the KMS config tests.
Changed virtual/mesa dependency to drm into qtbase receipt until it gets upstreamed.

Change-Id: I1aa999865166c3a2831579c83610ac2b862b9359
Reviewed-by: Samuli Piippo <samuli.piippo@theqtcompany.com>