Staging: hv: add the Hyper-V virtual bus to the build

Add the Hyper-V virtual bus 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
new file mode 100644
index 0000000..40d922b
--- /dev/null
+++ b/drivers/staging/hv/Kconfig
@@ -0,0 +1,8 @@
+config HYPERV
+	tristate "Microsoft Hyper-V client drivers"
+	depends on X86
+	default n
+	help
+	  Select this option to run Linux as a Hyper-V client operating
+	  system.
+