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

This is the virtual network driver when running Linux on top of Hyper-V.

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

diff --cc drivers/staging/hv/NetVsc.c
Simple merge

diff --cc drivers/staging/hv/NetVsc.h
Simple merge

diff --cc drivers/staging/hv/RndisFilter.c
Simple merge

diff --cc drivers/staging/hv/RndisFilter.h
Simple merge

diff --cc drivers/staging/hv/netvsc_drv.c
Simple merge