L2CA_SetIdleTimeout() function

* Function L2CA_SetIdleTimeout * Description Higher layers call this function to set the idle timeout for * a connection, or for all future connections. The "idle timeout" * is the amount of time that a connection can remain up with * no L2CAP channels on it. A timeout of zero means that the * connection will be torn down immediately when the last channel * is removed. A timeout of 0xFFFF means no timeout. Values are * in seconds. * Returns TRUE if command succeeded, FALSE if failed * NOTE This timeout takes effect after at least 1 channel has been * established and removed. L2CAP maintains its own timer from * whan a connection is established till the first channel is * set up.