buildroot

xdriver_xf86-video-intel: Bump version to 2.99.914

- enable sna module by default
- optionally enable uxa module if DRI2 support is enabled
- add support for DRI3
- dependencies for DRI1/2/3 modules are provided by xserver_xorg-server,
  therefore remove mesa3d dependency
- clean-up ums/kms options, configure picks sane defaults
- replace dependencies xproto_randrproto & xproto_renderproto with xlib_libXrandr

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>