mvebu: LS421DE: add linkstation poweroff driver

Compile the Linkstation poweroff module for the Buffalo LS421DE.
Without this driver the device remains forever halted if a power off
command is executed.

The driver will also allow to use the WoL feature, which wasn't availabe
in the stock firmware.

Signed-off-by: Daniel González Cabanelas <[email protected]>

target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts

@@ -209,12 +209,6 @@
 			gpio = <&gpio0 9 GPIO_ACTIVE_HIGH>;
 		};
 	};
-
-	/* FIXME: this driver needs to be aware of the LED2 eth phy use,
-	   which must be set to off state before shutting down the machine */
-	restart_poweroff {
-		compatible = "restart-poweroff";
-	};
 };
 
 &eth1 {
@@ -243,13 +237,6 @@
 
 	ethphy0: ethernet-phy@0 { /* Marvell 88E1518 */
 		reg = <0>;
-		/*
-		 * LED2 is used to inform, at restart time, if the power
-		 * switch was slided to the "off" position.
-		 * Page 0x3, Register 0x10, bits 8-11:
-		 *     0x800: LED2 off, power off the machine
-		 *     0x900: LED2 on, boot the machine
-		 */
 		marvell,reg-init = <0x3 0x10 0x1 0x1991>, /* LED function */
 				   <0x3 0x11 0x1 0x4401>, /* LED polarity */
 				   <0x3 0x12 0x1 0x4905>; /* LED timer */

target/linux/mvebu/image/cortexa9.mk

@@ -24,8 +24,8 @@ define Device/buffalo_ls421de
   DEVICE_DTS := armada-370-buffalo-ls421de
   DEVICE_PACKAGES :=  \
     kmod-rtc-rs5c372a kmod-hwmon-gpiofan kmod-hwmon-drivetemp kmod-usb3 \
-    kmod-md-raid0 kmod-md-raid1 kmod-md-mod kmod-fs-xfs mkf2fs e2fsprogs \
-    partx-utils
+    kmod-linkstation-poweroff kmod-md-raid0 kmod-md-raid1 kmod-md-mod \
+    kmod-fs-xfs mkf2fs e2fsprogs partx-utils
 endef
 TARGET_DEVICES += buffalo_ls421de