net: Add TI DaVinci EMAC driver

Add support for TI DaVinci EMAC driver.

TI DaVinci Ethernet Media Access Controller module is based upon
TI CPPI 3.0 DMA engine and supports 10/100 Mbps on all and Gigabit modes on
some TI devices. It supports MII/RMII and has up to 8Kbytes of internal
descriptor memory. This driver has been working on several TI devices including
DM644x, DM646x and DA830 platforms. The specs of this device are available at:
http://www.ti.com/litv/pdf/sprue24a

Signed-off-by: Anant Gole <anantgole@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/Kconfig

@@ -926,6 +926,16 @@ config NET_NETX
 	  To compile this driver as a module, choose M here. The module
 	  will be called netx-eth.
 
+config TI_DAVINCI_EMAC
+	tristate "TI DaVinci EMAC Support"
+	depends on ARM && ARCH_DAVINCI
+	select PHYLIB
+	help
+	  This driver supports TI's DaVinci Ethernet .
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called davinci_emac_driver.  This is recommended.
+
 config DM9000
 	tristate "DM9000 support"
 	depends on ARM || BLACKFIN || MIPS

drivers/net/Makefile

@@ -2,6 +2,8 @@
 # Makefile for the Linux network (ethercard) device drivers.
 #
 
+obj-$(CONFIG_TI_DAVINCI_EMAC) += davinci_emac.o
+
 obj-$(CONFIG_E1000) += e1000/
 obj-$(CONFIG_E1000E) += e1000e/
 obj-$(CONFIG_IBM_NEW_EMAC) += ibm_newemac/