Fixes for omapdrm, some of which were already present in 3.14, and some which
appeared in 3.15-rc1:

- fixes for primary-plane handling which caused crashes
- fix all kinds of uninit issues which prevented from unloading the omapdrm
  module.
- fixes for HDMI enable/disable issues

* tag 'omapdrm-fixes-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  drm/omap: fix the handling of fb ref counts
  drm/omap: protect omap_crtc's event with event_lock spinlock
  drm/omap: Use old_fb to synchronize between successive page flips
  drm/omap: Fix crash when using LCD3 overlay manager
  drm/omap: gem sync: wait on correct events
  drm/omap: Fix memory leak in omap_gem_op_async
  drm/omap: remove warn from debugfs
  drm/omap: remove extra plane->destroy from crtc destroy
  drm/omap: print warning when rotating non-TILER fb
  drm/omap: fix missing unref to fb's buf object
  drm/omap: fix plane rotation
  drm/omap: fix enabling/disabling of video pipeline
  drm/omap: fix missing disable for unused encoder
  drm/omap: fix race issue when unloading omapdrm
  drm/omap: fix DMM driver (un)registration
  drm/omap: fix uninit order in pdev_remove()
  drm/omap: fix output enable/disable sequence