net: fec: fec-uio driver

i.mx: fec-uio driver

This patch adds the userspace support. In the new mode, basic
hardware initialization is performed in kernel via userspace
input/output, while the majority of code is written in the
userspace.

Signed-off-by: Sachin Saxena <sachin.saxena@nxp.com>
Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Reviewed-by: Sachin Saxena <sachin.saxena@nxp.com>

drivers/net/ethernet/freescale/Kconfig

@@ -32,6 +32,14 @@ config FEC
 	  Say Y here if you want to use the built-in 10/100 Fast ethernet
 	  controller on some Motorola ColdFire and Freescale i.MX/S32 processors.
 
+config FEC_UIO
+	tristate "FEC_UIO ethernet controller (i.MX 8M Mini CPU)"
+	default n
+	select UIO
+	help
+	  Say Y here if you want to use the built-in 10/100 Fast ethernet
+	  controller on Freescale i.MX 8M Mini processor.
+
 config FEC_MPC52xx
 	tristate "FEC MPC52xx driver"
 	depends on PPC_MPC52xx && PPC_BESTCOMM

drivers/net/ethernet/freescale/Makefile

@@ -5,6 +5,7 @@
 
 obj-$(CONFIG_FEC) += fec.o
 fec-objs :=fec_main.o fec_ptp.o
+obj-$(CONFIG_FEC_UIO) += fec_uio.o
 
 obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o
 ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y)