kernel: add kmod-phy-motorcomm

The Motorcomm YT8821 2.5G PHY is being used in some devices as an
alternative to devices like the RTL8221B.  Package it as a kmod
so it can be used as a device package rather than requiring changes
to the target kernel config.

Signed-off-by: Andrew MacIntyre <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21399
Signed-off-by: Hauke Mehrtens <[email protected]>

package/kernel/linux/modules/netdevices.mk

@@ -621,6 +621,23 @@ endef
 
 $(eval $(call KernelPackage,phy-aquantia))
 
+
+define KernelPackage/phy-motorcomm
+  SUBMENU:=$(NETWORK_DEVICES_MENU)
+  TITLE:=Motorcomm Ethernet PHYs
+  DEPENDS:=+kmod-libphy
+  KCONFIG:=CONFIG_MOTORCOMM_PHY
+  FILES:=$(LINUX_DIR)/drivers/net/phy/motorcomm.ko
+  AUTOLOAD:=$(call AutoLoad,18,motorcomm,1)
+endef
+
+define KernelPackage/phy-motorcomm/description
+  Supports the Motorcomm 8511/8521/8531/8531S/8821 Ethernet PHYs
+endef
+
+$(eval $(call KernelPackage,phy-motorcomm))
+
+
 define KernelPackage/dsa
   SUBMENU:=$(NETWORK_DEVICES_MENU)
   TITLE:=Distributed Switch Architecture support