msm: mdss: enforce cleanup of dma pipes on rotator queue

When queuing buffer to rotator, DMA pipes should only be used by
rotator. In case DMA pipes are pending cleanup, perform a kickoff so
that the dma pipes are freed before the rotator session is queued.

CRs-Fixed: 473133
Change-Id: I29f629a2bbf290e1130ad5d0259fea462ccc158d
Signed-off-by: Adrian Salido-Moreno <adrianm@codeaurora.org>