tegra-hv-net: Updated default mac address

- Updated deault mac address to a fixed
  private address. It is needed to fix
  telnet issue when only Linux VM is
  rebooted as other VM may still have
  old MAC address, cached earlier.
- In case of valid mac address found in
  dt, copying mac address from dt to ndev
- Also copied drivers/virt/tegra/syscalls.h
  to include/soc/tegra/virt/syscalls.h. Later
  drivers/virt/tegra/syscalls.h will be deleted.

Bug 200244271

Change-Id: Ief5c0bdc2941a02f7eba05a599fd2600f7e6a170
Signed-off-by: Ambika Prasad <ambikap@nvidia.com>
Reviewed-on: http://git-master/r/1252622
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nitin Sehgal <nsehgal@nvidia.com>
Reviewed-by: Sandeep Trasi <strasi@nvidia.com>
8 files changed