beagleboard: change to xserver-xorg, not -lite

The difference is less than 16kb, and for that the extra maintenance of two
recipies really isn't worth it.

(From meta-yocto rev: 2ab43f47ae531af5fc850d2aa04f7116ddb1a0e8)

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

meta-yocto-bsp/conf/machine/beagleboard.conf

@@ -2,8 +2,8 @@
 #@NAME: Beagleboard machine
 #@DESCRIPTION: Machine configuration for the http://beagleboard.org/ board 
 
-PREFERRED_PROVIDER_virtual/xserver ?= "xserver-xorg-lite"
-XSERVER ?= "xserver-xorg-lite \
+PREFERRED_PROVIDER_virtual/xserver ?= "xserver-xorg"
+XSERVER ?= "xserver-xorg \
            xf86-input-evdev \
            xf86-input-mouse \
            xf86-video-omapfb \