Staging: hv: add the Hyper-V virtual network driver to the build

Add the Hyper-V virtual network driver to the kernel build system.

Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/hv/Kconfig b/drivers/staging/hv/Kconfig
index a94c1d6..932bfd6 100644
--- a/drivers/staging/hv/Kconfig
+++ b/drivers/staging/hv/Kconfig
@@ -19,3 +19,10 @@
 	default n
 	help
 	  Select this option to enable the Hyper-V virtual block driver.
+
+config HYPERV_NET
+	tristate "Microsoft Hyper-V virtual network driver"
+	depends on NET
+	default n
+	help
+	  Select this option to enable the Hyper-V virtual network driver.