ANDROID: drm: kirin: Add kirin960 dpe driver support

add kirin960 dpe driver support

Bug: 146450171
Signed-off-by: Xu YiPing <xuyiping@hisilicon.com>
[jstultz: includes fixes folded in to remove LDI enable
 call, fix rdma_stride calculation, and fix hdmi hotplug
 crashes]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: Ifdf3ef522f929c23f7da49b3c692550a3b3d6c49