xf86-video-intel: upgrade to 2.99.912

xf86-video-intel: upgrade to 2.99.912

Drop a backported patch that has been applied.

Apply a patch from upstream to add enable/disable options for each DRI level, as
.912 won't build if the X server doesn't support DRI3.  Add PACKAGECONFIG
options for each DRI level and enable DRI1 and DRI2.

Add a PACKAGECONFIG option for the client tools, disabled by default as they're
only useful on machines with hybrid discrete/integrated GPUs.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>