GAP_ConnBTWrite() function

* Function GAP_ConnBTWrite * Description Bluetooth Aware applications can call this function to write data. * Parameters: handle - Handle of the connection returned in the Open * p_buf - pointer to address of buffer with data, * Returns BT_PASS - data read * GAP_ERR_BAD_HANDLE - invalid handle * GAP_ERR_BAD_STATE - connection not established * GAP_INVALID_BUF_OFFSET - buffer offset is invalid