xserver-xorg: add runtime provides for the driver ABI version

xserver-xorg: add runtime provides for the driver ABI version

The xserver driver ABIs can and do change in a way that is unrelated to the
version of xserver, so it's entirely possible to build an image that has a
mismatch between the server ABI version and the version that the drivers were
built against.  xserver detects this and refuses to load the modules.

By adding RPROVIDEs to the xserver package that describe the ABI versions it has
(such as xorg-abi-video-13, xorg-abi-input-11), drivers can RDEPEND on the
version that they were built against.  This means that when the ABIs change,
there will be package dependency errors at image time instead of images that
build fine but don't work.

(From OE-Core rev: 8ef5f205aec04140198d5ba0f5c405ae6e977dbe)

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