Most notable addition this time is the support for the GPU performance
counters by Christian. This has been in the making for some time and it
has matured a lot. Since this is adding UAPI, the corresponding WIP
userspace can be found at [1] mesa/libdrm repos. I expect that
Christian sends out the final userspace patches for this once you have
pulled the kernel bits.

Philipp optimized the probe path, so etnaviv gets out of the way for
systems that want to boot real quick.

I've done mostly cleanups, disentangling etnaviv from the IOMMU API,
with some MMUv1 optimizations on the way.

* 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux: (36 commits)
  drm/etnaviv: remove unnecessary clock stabilization delay
  drm/etnaviv: reduce reset delay
  drm/etnaviv: remove unused function etnaviv_gem_new
  drm/etnaviv: remove stale comment
  drm/etnaviv: submit supports performance monitor requests
  drm/etnaviv: enable debug registers on demand
  drm/etnaviv: need to disable clock gating when doing profiling
  drm/etnaviv: add MC perf domain
  drm/etnaviv: add TX perf domain
  drm/etnaviv: add RA perf domain
  drm/etnaviv: add SE perf domain
  drm/etnaviv: add PA perf domain
  drm/etnaviv: add SH perf domain
  drm/etnaviv: add PE perf domain
  drm/etnaviv: add HI perf domain
  drm/etnaviv: use 'sync points' for performance monitor requests
  drm/etnaviv: clear alloced event
  drm/etnaviv: add 'sync point' support
  drm/etnaviv: add performance monitor request processing
  drm/etnaviv: copy pmrs from userspace
  ...