net: ethernet: intel: add s10hssi driver

Add stratix 10 high speed interface driver supporting both
10G and 100G ethernet.

Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Based-on: Wu Hao <hao.wu@intel.com>
Based-on: Xu Yilun <yilun.xu@intel.com>

Author: matthew-gerlach

drivers/net/ethernet/intel/Kconfig

@@ -343,4 +343,17 @@ config IGC
 	  To compile this driver as a module, choose M here. The module
 	  will be called igc.
 
+config S10HSSI
+	tristate "Control Plane Driver for Stratix 10 HSSI"
+	select REGMAP_INDIRECT_REGISTER
+	help
+	  This driver provides control plane support for an Stratix 10
+	  High Speed Serial Interface.
+
+	  The Stratix 10 High Speed Serial Interface provides a data
+	  path between the FPGA and the external QSFP interfaces.  This
+	  data path does not involve packets transferred between host
+	  memory and the fpga.  As such a very limited set of networking
+	  functionality is provided.
+
 endif # NET_VENDOR_INTEL

drivers/net/ethernet/intel/Makefile

@@ -16,3 +16,4 @@ obj-$(CONFIG_IXGB) += ixgb/
 obj-$(CONFIG_IAVF) += iavf/
 obj-$(CONFIG_FM10K) += fm10k/
 obj-$(CONFIG_ICE) += ice/
+obj-$(CONFIG_S10HSSI) += s10hssi.o