Extcon core doesn't free the memory when we do unregister.
Kfree is added in the remove path as it was missing.
Signed-off-by: anish kumar <anish198519851985@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>