vmwgfx-xorg: Avoid enabling unwanted outputs in initial configuration

vmwgfx-xorg: Avoid enabling unwanted outputs in initial configuration

Add a hack so that we avoid enabling all connected outputs during the
initial configuration. On older X servers they would be enabled as cloned,
which didn't really cause any problem, but on later X servers they would
initially be enabled next to eachother which looks odd.

A RandR call will still show the disabled outputs as connected, and if there
is a monitor section in the config file for the output in question,
it will also have a connected status, so that it may be explicitly enabled
or disabled from a config file.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>