Added support for new Android API for LE CoC

Added support for the new Android API including the management of the
LE_PSM values.
Also fixed a bug when de-registering the L2CAP CoC, the RCB is not
freed correctly.

Test: Ran the new ACTS Tests for LE CoC and existing ACTS for RfComm
Bug: 70683224
Change-Id: I5a545656bece667e7ba942d7b2334e3f5b49b283