net: synquacer: Add netsec driver

Add SynQuacer's NETSEC GbE controller driver.
Since this driver will load the firmware from SPI NOR flash,
this depends on CONFIG_SYNQUACER_SPI=y.

Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 3826390..9fc28b1 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -673,6 +673,14 @@
 	  This driver implements support for the Socionext AVE Ethernet
 	  controller, as found on the Socionext UniPhier family.
 
+config SNI_NETSEC
+	bool "Socionext NETSEC Ethernet support"
+	depends on DM_ETH && SYNQUACER_SPI
+	select PHYLIB
+	help
+	  This driver implements support for the Socionext SynQuacer NETSEC
+	  ethernet controller, as found on the Socionext SynQuacer family.
+
 source "drivers/net/mscc_eswitch/Kconfig"
 
 config ETHER_ON_FEC1