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 --cc drivers/staging/Kconfig
Simple merge

diff --cc drivers/staging/Makefile
Simple merge

diff --cc drivers/staging/hv/Kconfig
Simple merge

diff --cc drivers/staging/hv/Makefile
Simple merge