power: extcon-xlate: logging cable names for debug

power: extcon-xlate: logging cable names for debug

Add debug prints to log cable names to debug scenarios where
cable is inserted but extcon xlate driver fail to detect cable
type, set last cable in state to 0 when all the connected cables
detached from device.

Bug 1571110

Change-Id: I436c1e52f351e53788bc67b6feedf439bc3d2ee7
Signed-off-by: Venkat Reddy Talla <vreddytalla@nvidia.com>
Reviewed-on: http://git-master/r/716730
(cherry picked from commit 78d8733fb37a559ae4414e6b23f7103b0dd43a3e)
Signed-off-by: Venkat Reddy Talla <vreddytalla@nvidia.com>
Reviewed-on: http://git-master/r/839248
GVS: Gerrit_Virtual_Submit
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>