disp: msm: sde: track available hw resources

Track available hw resources using a common data structure in
the sde_rm object and pass available hw resource info to
interface drivers to make informed decisions in preparing
or filtering display modes.

Change-Id: I05649623233b0f531582e8c90d1ef92c7fceded4
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>