msm: rotator: Rotator resource management

As a part of the effort to separate out rotator from MDP driver
to be its own driver, Rotator will independently vote for
resources it requires.

Change-Id: Ic7f7705852ee29d69e45dd22238f3447646bde4d
Signed-off-by: Terence Hampson <thampson@codeaurora.org>