packagegroup-ni-xfce: add xrdb
packagegroup-ni-xfce: add xrdb

xrdb appears to be required by some base xinitrc bits — there's an error
on startup in the logs indicating that somebody tries to run xrdb, but
it's not from anything in OE. For now, add it to our packagegroup.

Natinst-Rally-ID: US26916
Acked-by: Gratian Crisan <17cf39b7426cfdea7dd491f7105a23841aaa302f@ni.com>
Acked-by: Scot Salmon <41bcf349e14c9fbcd1dc88f5e0bd1705cc3f508e@ni.com>
Signed-off-by: Richard Tollerton <67c688e7f7482ba5c4ebe3d70bc77594748182a6@ni.com>

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt