drm/msm/sde: reserve HW resources for primary display

Primary displays are validated with only certain set of HW
resources. As per the validation results, this change
reserves CTL and Layer Mixer blocks for primary display through
device tree bindings. Also, since we are not supporting dynamic
transition of DSC block bindings across displays, the DSC blocks
are hard selected for CTL 0/1 paths. So it is required that any
primary display which selects the DSC topology path must acquire
CTL0/1 paths during SDE RM allocation.

Change-Id: I84911f47908082c276dbc0304d185f6d83b98c75
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>