MLK-16013-33 staging: typec: Do not switch to unattached state for BIST

If we received unsupported BIST command, we should by pass it and ready
to accept following command for test, not unconditionly to set the port
to be unattached state and terminate the test.

Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Li Jun <jun.li@nxp.com>

drivers/staging/typec/tcpm.c

@@ -2883,8 +2883,6 @@ static void run_state_machine(struct tcpm_port *port)
 		default:
 			break;
 		}
-		/* Always switch to unattached state */
-		tcpm_set_state(port, unattached_state(port), 0);
 		break;
 	case ERROR_RECOVERY:
 		tcpm_swap_complete(port, -EPROTO);