This patch brings the qemu networking setup for qemuzynq and
qemumicroblaze into feature parity with the other qemu machines.
Specifically enabling TAP interface attachcment and kernel command line
IP configuration.
(From OE-Core rev: 49bdfab6ba1d92d8f48ce9c63d796a7cedf4f247)
Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>