target: 8994: add display support for 8994 target

Configure MSM8994 CDP and MTP devices with sharp 2K
dual dsi panel. This change also adds configuration for
8994 target display resource like LDO, GPIOs, clock and
pll. It also adds GCDB and target display files in bootloader
compilation chain.

Change-Id: I539397d7664ce97b0bfcd718b60ed9f9f120e797
6 files changed