stmmac: add ipq806x glue layer

The ethernet controller available in IPQ806x is a Synopsys DesignWare
Gigabit MAC IP core, already supported by the stmmac driver.

This glue layer implements some platform specific settings required to
get the controller working on an IPQ806x based platform.

Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/Kconfig

@@ -16,6 +16,7 @@ if STMMAC_ETH
 config STMMAC_PLATFORM
 	tristate "STMMAC Platform bus support"
 	depends on STMMAC_ETH
+	select MFD_SYSCON
 	default y
 	---help---
 	  This selects the platform specific bus support for the stmmac driver.
@@ -36,6 +37,19 @@ config DWMAC_GENERIC
 	  platform specific code to function or is using platform
 	  data for setup.
 
+config DWMAC_IPQ806X
+	tristate "QCA IPQ806x DWMAC support"
+	default ARCH_QCOM
+	depends on OF
+	select MFD_SYSCON
+	help
+	  Support for QCA IPQ806X DWMAC Ethernet.
+
+	  This selects the IPQ806x SoC glue layer support for the stmmac
+	  device driver. This driver does not use any of the hardware
+	  acceleration features available on this SoC. Network devices
+	  will behave like standard non-accelerated ethernet interfaces.
+
 config DWMAC_LPC18XX
 	tristate "NXP LPC18xx/43xx DWMAC support"
 	default ARCH_LPC18XX

drivers/net/ethernet/stmicro/stmmac/Makefile

@@ -6,6 +6,7 @@ stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o	\
 
 # Ordering matters. Generic driver must be last.
 obj-$(CONFIG_STMMAC_PLATFORM)	+= stmmac-platform.o
+obj-$(CONFIG_DWMAC_IPQ806X)	+= dwmac-ipq806x.o
 obj-$(CONFIG_DWMAC_LPC18XX)	+= dwmac-lpc18xx.o
 obj-$(CONFIG_DWMAC_MESON)	+= dwmac-meson.o
 obj-$(CONFIG_DWMAC_ROCKCHIP)	+= dwmac-rk.o