drm/msm/sde: improve resource manager hw block lookup time

Move hardware blocks tracking in the resource manager to use
one list per hardware block type to reduce list traversal cost
when looking for a specific hardware block type.

Change-Id: I5b574c7ecd80054a26937a95531a28c097d52c25
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>