staging: android: ion_test: unregister the misc device
staging: android: ion_test: unregister the misc device

Add the remove() method for deregister from misc device
when it's unloaded.

Signed-off-by: Phong Tran <ef5cc4595e4f7ef6b60cbdfeace4845b7e64bdaf@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs