drm/i915: Update base driver to 20160808

drm/i915: Upgrade to Linux 4.0

* Basic Skylake support

* Panel Self-Refresh (PSR) now supported on Valleyview and Cherryview

* Preparations for atomic display updates

* Performance improvements o

drm/i915: Upgrade to Linux 4.0

* Basic Skylake support

* Panel Self-Refresh (PSR) now supported on Valleyview and Cherryview

* Preparations for atomic display updates

* Performance improvements on various GPU families, including Cherryview,
Broadwell and Haswell

* GPU frequencies are now kept at a minimum of 450MHz when possible
on Haswell and Broadwell, ensuring a minimum experience level for
various types of workloads

* Improved reset support for gen3/4 GPUs, which should fix some OpenGL
crashes on Core 2 and pre-2012 Atom machines

* Better sound/graphics driver synchronization for audio over hdmi support

* As usual, small bugfixes and stability improvements here and there

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drm/i915: Update to Linux 3.18

* Revamped, more robust vblank handling

* More paranoid pageflips, with added error detection and recovery logic

* Lots of Cherryview improvements, including runtime

drm/i915: Update to Linux 3.18

* Revamped, more robust vblank handling

* More paranoid pageflips, with added error detection and recovery logic

* Lots of Cherryview improvements, including runtime power management
and better eDP panel support

* Lots of Broadwell improvements. GPU commands can now be submitted via
a new execlist mechanism

* Preparatory work for Skylake support

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drm/i915: Update to Linux 3.17

* With an Haswell stability fix from Linux 3.19

* Display-Port code not completely synced with Linux 3.17, this was
breaking things as noticed by Rimvydas Jasinskas

drm/i915: Update to Linux 3.17

* With an Haswell stability fix from Linux 3.19

* Display-Port code not completely synced with Linux 3.17, this was
breaking things as noticed by Rimvydas Jasinskas

* Broadwell and Cherryview support improvements

* Runtime power-management improvements

* Panel Self-Refresh (PSR) now enabled by default on Haswell and Broadwell,
leading to further power savings

* Interrupt handling improvements

* backlight brightness locking fixes by Yellow Rabbit

* As usual, all sort of little fixes everywhere

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drm/i915: Update to Linux 3.16

* Much improved support for Broadwell GPUs. Acceleration should now be fully
operational and the giant L4 eDRAM cache is now enabled when present.

* Baytrail/Valley

drm/i915: Update to Linux 3.16

* Much improved support for Broadwell GPUs. Acceleration should now be fully
operational and the giant L4 eDRAM cache is now enabled when present.

* Baytrail/Valleyview support improvements

* prelimary support for Cherryview (14nm Atom SOCs)

* Various fixes and performance improvements on most other GPU generations

* Improved runtime power management

* 5.4GHz DisplayPort support

* Large cursor support (up to 256x256 pixels), useful for high-dpi displays.

* Mapping of user pages into video memory (userptr)
This allows zero-copy downloads and efficient readback to/from the GPU,
allowing faster rendering of client-side software rasterisers, mitigation
of stalls due to read back and faster pipelining of texture data (such as
pixel buffer objects in GL or data blobs in CL). Mixed CPU/GPU operations
become more efficient in general.

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