kernel: alx driver for AR816x/AR817x Ethernet

These ethernet cards can be found onboard various x86 and
x86_64 Gigabyte mainboards since the sandy-bridge/ ivy-bridge era.

This driver supports the following QCA/"Killer" ethernet cards:

	1969:1091 - AR8161 Gigabit Ethernet
	1969:1090 - AR8162 Fast Ethernet
	1969:10A1 - AR8171 Gigabit Ethernet
	1969:10A0 - AR8172 Fast Ethernet

	1969:E091 - Killer E2200 Gigabit Ethernet
	1969:E0A1 - Killer E2400 Gigabit Ethernet
	1969:E0B1 - Killer E2500 Gigabit Ethernet

Successfully runtime tested with the onboard ethernet card of a
Gigabyte GA-H77M-D3H ivy-bridge mainboard (x86_64/EFI image):

02:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8161 [...]
	Subsystem: Gigabyte Technology Co., Ltd AR8161 [...]
	Kernel driver in use: alx
	Kernel modules: alx

alx 0000:02:00.0 eth0: Qualcomm Atheros AR816x/AR817x Ethernet [...]
alx 0000:02:00.0 eth0: NIC Up: 1 Gbps Full

Signed-off-by: Stefan Lippers-Hollmann <[email protected]>
Signed-off-by: Christian Lamparter <[email protected]> [fix typo,
shorten subject to <50 characters, shorten lines to <76 chars.]

package/kernel/linux/modules/netdevices.mk

@@ -33,6 +33,18 @@ endef
 $(eval $(call KernelPackage,skge))
 
 
+define KernelPackage/alx
+  SUBMENU:=$(NETWORK_DEVICES_MENU)
+  TITLE:=Qualcomm Atheros AR816x/AR817x PCI-E Ethernet Network Driver
+  DEPENDS:=@PCI_SUPPORT +kmod-mdio
+  KCONFIG:=CONFIG_ALX
+  FILES:=$(LINUX_DIR)/drivers/net/ethernet/atheros/alx/alx.ko
+  AUTOLOAD:=$(call AutoProbe,alx)
+endef
+
+$(eval $(call KernelPackage,alx))
+
+
 define KernelPackage/atl2
   SUBMENU:=$(NETWORK_DEVICES_MENU)
   TITLE:=Atheros L2 Fast Ethernet support