ble_gap_set_prefered_default_le_phy() function

Set preferred default PHYs to be used for connections. @params tx_phys_mask Preferred TX PHY. Can be mask of following constants: - BLE_GAP_LE_PHY_1M_MASK - BLE_GAP_LE_PHY_2M_MASK - BLE_GAP_LE_PHY_CODED_MASK - BLE_GAP_LE_PHY_ANY_MASK @params rx_phys_mask Preferred RX PHY. Can be mask of following constants: - BLE_GAP_LE_PHY_1M_MASK - BLE_GAP_LE_PHY_2M_MASK - BLE_GAP_LE_PHY_CODED_MASK - BLE_GAP_LE_PHY_ANY_MASK