arm64: dts: ti: k3-am62p: Add overlay to use DSS in display sharing mode

commit 93d751a94cbf9ad07c7f658e78aa510d919d7cd6 from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git



This overlay needs to be used with display sharing supported device
manager firmware named as :
ti-dm/am62pxx/dss_display_share.wkup-r5f0_0.release.strip.out

Remote core running this firmware has write access to "common" register
space, VIDL pipeline, OVR1 overlay and VP1 videoport.

The processing core running Linux is provided write access to VID
pipeline and "common1" register space.

The VP1 video port is shared between Linux and remote core with
remote core configuring the overlay manager to set Zorder 1 for VID
pipeline and Zorder 2 for VIDL pipeline.

Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>