hwc: Populate frame rate in rotator set

- Populate frame_rate in rotator set, so that driver
  can vote for honest BW for rotator based on frame rate.
- If metadata contains source fps, frame_rate will be set
  to source fps, else it will be set to primary refresh rate.
- frame_rate will be populated for primary with
  source fps from metada, only when secondary is not active.

Change-Id: Icaacd0ed67ec09591d31868591680d2e86fe54a2
diff --git a/libhwcomposer/hwc_utils.h b/libhwcomposer/hwc_utils.h
index 4849baf..41dd258 100644
--- a/libhwcomposer/hwc_utils.h
+++ b/libhwcomposer/hwc_utils.h
@@ -420,7 +420,8 @@
 
 int configRotator(overlay::Rotator *rot, ovutils::Whf& whf,
         hwc_rect_t& crop, const ovutils::eMdpFlags& mdpFlags,
-        const ovutils::eTransform& orient, const int& downscale);
+        const ovutils::eTransform& orient, const int& downscale,
+        const uint32_t& frame_rate);
 
 int configMdp(overlay::Overlay *ov, const ovutils::PipeArgs& parg,
         const ovutils::eTransform& orient, const hwc_rect_t& crop,