Game controllers can be connected twice through USB and BT. Only
one connection is allowed. Currently we perform a check for duplicate
controllers halfway through device initialization. To prevent
'transient' devices, we should do this check as early as we can.
Signed-off-by: NRoderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>