vmwgfx: Set up XA version checking.
vmwgfx: Set up XA version checking.

Signed-off-by: Thomas Hellstrom <a26490dfbee4be3d38287ad6448444504f58193c@vmware.com>

dezelin/xf86-video-vmware,dezelin/xf86-video-vmware,dezelin/xf86-video-vmware