net: cortina_ni: Add eth support for Cortina Access CAxxxx SoCs

Add Cortina Access Ethernet device driver for CAxxxx SoCs.
This driver supports both legacy and DM_ETH network models.

Signed-off-by: Aaron Tseng <aaron.tseng@cortina-access.com>
Signed-off-by: Alex Nemirovsky <alex.nemirovsky@cortina-access.com>
Signed-off-by: Abbie Chang <abbie.chang@cortina-access.com>

CC: Joe Hershberger <joe.hershberger@ni.com>
CC: Abbie Chang <abbie.chang@Cortina-Access.com>
CC: Tom Rini <trini@konsulko.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 1864fd8..1e5a361 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -200,6 +200,8 @@
 F:	drivers/i2c/i2c-cortina.h
 F:	drivers/mtd/nand/raw/cortina_nand.c
 F:	drivers/mtd/nand/raw/cortina_nand.h
+F:	drivers/net/cortina_ni.c
+F:	drivers/net/cortina_ni.h
 F:	configs/cortina_presidio-asic-pnand_defconfig
 
 ARM/CZ.NIC TURRIS MOX SUPPORT
@@ -811,6 +813,8 @@
 F:	drivers/spi/ca_sflash.c
 F:	drivers/i2c/i2c-cortina.c
 F:	drivers/i2c/i2c-cortina.h
+F:	drivers/net/cortina_ni.c
+F:	drivers/net/cortina_ni.h
 
 MIPS MEDIATEK
 M:	Weijie Gao <weijie.gao@mediatek.com>