net: vertexcom: Add MSE102x SPI support

This implements an SPI protocol driver for Vertexcom MSE102x
Homeplug GreenPHY chip.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/vertexcom/Kconfig

@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Vertexcom network device configuration
+#
+
+config NET_VENDOR_VERTEXCOM
+	bool "Vertexcom devices"
+	default y
+	help
+	  If you have a network (Ethernet) card belonging to this class, say Y.
+
+	  Note that the answer to this question doesn't directly affect the
+	  kernel: saying N will just cause the configurator to skip all
+	  the questions about Vertexcom cards. If you say Y, you will be asked
+	  for your specific card in the following questions.
+
+if NET_VENDOR_VERTEXCOM
+
+config MSE102X
+	tristate "Vertexcom MSE102x SPI"
+	depends on SPI
+	help
+	  SPI driver for Vertexcom MSE102x SPI attached network chip.
+
+endif # NET_VENDOR_VERTEXCOM