net: add MSCC Ocelot switch support

This patch adds support for the Microsemi Ethernet switch present on
Ocelot SoCs.
Signed-off-by: NGregory CLEMENT <gregory.clement@bootlin.com>
Reviewed-by: NDaniel Schwierzeck <daniel.schwierzeck@gmail.com>

MAINTAINERS

@@ -539,6 +539,7 @@ F:	drivers/gpio/mscc_sgpio.c
 F:	drivers/spi/mscc_bb_spi.c
 F:	include/configs/vcoreiii.h
 F:	drivers/pinctrl/mscc/
+F:	drivers/net/ocelot_switch.c
 
 MIPS JZ4780
 M:	Ezequiel Garcia <ezequiel@collabora.com>

drivers/net/Kconfig

@@ -432,6 +432,13 @@ config SNI_AVE
 	  This driver implements support for the Socionext AVE Ethernet
 	  controller, as found on the Socionext UniPhier family.
 
+config MSCC_OCELOT_SWITCH
+	bool "Ocelot switch driver"
+	depends on DM_ETH && ARCH_MSCC
+	select PHYLIB
+	help
+	  This driver supports the Ocelot network switch device.
+
 config ETHER_ON_FEC1
 	bool "FEC1"
 	depends on MPC8XX_FEC

drivers/net/Makefile

@@ -75,3 +75,4 @@ obj-$(CONFIG_FSL_PFE) += pfe_eth/
 obj-$(CONFIG_SNI_AVE) += sni_ave.o
 obj-y += ti/
 obj-$(CONFIG_MEDIATEK_ETH) += mtk_eth.o
+obj-$(CONFIG_MSCC_OCELOT_SWITCH) += ocelot_switch.o