net: dsa: microchip: rename ksz_spi.c to ksz9477_spi.c

Rename ksz_spi.c to ksz9477_spi.c and update Kconfig in preparation to add
more KSZ switch drivers.

Signed-off-by: Tristram Ha <[e-mail]>
Reviewed-by: Woojung Huh <[e-mail]>
Reviewed-by: Pavel Machek <[e-mail]>
Reviewed-by: Florian Fainelli <[e-mail]>
Reviewed-by: Andrew Lunn <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/dsa/microchip/Kconfig

···
-menuconfig MICROCHIP_KSZ
-	tristate "Microchip KSZ series switch support"
+menuconfig NET_DSA_MICROCHIP_KSZ9477
+	tristate "Microchip KSZ9477 series switch support"
 	depends on NET_DSA
 	select NET_DSA_TAG_KSZ
 	help
-	  This driver adds support for Microchip KSZ switch chips.
+	  This driver adds support for Microchip KSZ9477 switch chips.
 
-config MICROCHIP_KSZ_SPI_DRIVER
-	tristate "KSZ series SPI connected switch driver"
-	depends on MICROCHIP_KSZ && SPI
+config NET_DSA_MICROCHIP_KSZ9477_SPI
+	tristate "KSZ9477 series SPI connected switch driver"
+	depends on NET_DSA_MICROCHIP_KSZ9477 && SPI
 	help
 	  Select to enable support for registering switches configured through SPI.

drivers/net/dsa/microchip/Makefile

···
-obj-$(CONFIG_MICROCHIP_KSZ)	        += ksz_common.o
-obj-$(CONFIG_MICROCHIP_KSZ_SPI_DRIVER)	+= ksz_spi.o
+obj-$(CONFIG_NET_DSA_MICROCHIP_KSZ9477)		+= ksz_common.o
+obj-$(CONFIG_NET_DSA_MICROCHIP_KSZ9477_SPI)	+= ksz9477_spi.o