dbus-x11 hasn't existed as a package since 2012[1] and is just a
RPROVIDES in dbus, so depend on dbus directly instead.
[1] oe-core c02364f36e228835ea5d7fd4e1d347fd451f8544
(From OE-Core rev: 0de78341ddc3740891daf957d6d3a61b7af20167)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>