[BUILD] Disable LOCALVERSION_AUTO in upstream Linux builds.

If this option is enabled then the Xen mercurial version ID gets
tacked onto the kernel version (e.g. 2.6.24-git22-hg2593b69b183b)
which is unlikely to be useful or desirable. All the trees which we
build using this method already have uniquely identifying versions
(e.g. 2.6.24-git22 or 2.6.24-mm1).

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

buildconfigs/enable-xen-config

@@ -37,6 +37,7 @@ setopt CONFIG_XEN_BLKDEV_FRONTEND y
 setopt CONFIG_XEN_NETDEV_FRONTEND y
 setopt CONFIG_HVC_XEN y
 setopt CONFIG_NUMA n
+setopt CONFIG_LOCALVERSION_AUTO n
 
 case ${XEN_TARGET_ARCH} in
     x86_32) setopt CONFIG_64BIT n ;;