bluez4: fix network Connect parameter validation

The incorrect validation prevents connection to the NAP service on another
device.

(OE-Core submission: http://patches.openembedded.org/patch/56133/)

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
Merge pull request #8 from pabigot/for-dylan/bt-pan

bluez4: fix network Connect parameter validation
(haven't tested NAP support but patch seem good)