board: 8064: Add boot parameter support for HDMI primary display

Add a boot parameter to the board display file to support runtime
enablement of HDMI as primary display for APQ8064.

Change-Id: I645fe08df90352ae6344ae6f0fed19fcea3b3f67
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
3 files changed