ARM: dts: rockchip: Add BT_EN to the power sequence for veyron

Add GPIO D5 (BT_ENABLE_L) as reset-GPIO to the power sequence for the
Bluetooth/WiFi module. On devices with a Broadcom module the signal
needs to be asserted to use Bluetooth.

Note that BT_ENABLE_L is a misnomer in the schematics, the signal
actually is active-high.

Signed-off-by: Matthias Kaehlcke <[e-mail]>
Reviewed-by: Douglas Anderson <[e-mail]>
Signed-off-by: Heiko Stuebner <[e-mail]>

arch/arm/boot/dts/rk3288-veyron.dtsi

···
 		pinctrl-0 = <&bt_enable_l>, <&wifi_enable_h>;
 
 		/*
-		 * On the module itself this is one of these (depending
-		 * on the actual card populated):
+		 * Depending on the actual card populated GPIO4 D4 and D5
+		 * correspond to one of these signals on the module:
+		 *
+		 * D4:
 		 * - SDIO_RESET_L_WL_REG_ON
 		 * - PDN (power down when low)
+		 *
+		 * D5:
+		 * - BT_I2S_WS_BT_RFDISABLE_L
+		 * - No connect
 		 */
-		reset-gpios = <&gpio4 RK_PD4 GPIO_ACTIVE_LOW>;
+		reset-gpios = <&gpio4 RK_PD4 GPIO_ACTIVE_LOW>,
+			      <&gpio4 RK_PD5 GPIO_ACTIVE_LOW>;
 	};
 
 	vcc_5v: vcc-5v {