beagleboard.conf: fix hardcode of virtual/xserver

Here is the message from the bug 2260:

meta-yocto/conf/machine/beagleboard.conf hardcodes the virtual/xserver
provider, i.e., it includes the following:

PREFERRED_PROVIDER_virtual/xserver = "xserver-xorg-lite"

I don't think machine conf is the correct place for selecting what is
essentially a distro feature, but at least this should use the '?='
operator; as is to select a different provider one must provide a
complete beagleboard.conf file.

[YOCTO #2260]

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/meta-yocto/conf/machine/beagleboard.conf b/meta-yocto/conf/machine/beagleboard.conf
index fa2f8e7a55..06a0ecd388 100644
--- a/meta-yocto/conf/machine/beagleboard.conf
+++ b/meta-yocto/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-lite"
+XSERVER ?= "xserver-xorg-lite \
            xf86-input-evdev \
            xf86-input-mouse \
            xf86-video-omapfb \