Merged in rzr/nuttx/sandbox/rzr/review/master (pull request #860)

nucleo-144: Mount sysfs for ifconfig for f767-netnsh/defconfig

Even if ifconfig is working to set IP,
it will not work to display NICs (without args)

Change-Id: I62e0b2b5517620c5bc2dd4d3f5bf6f1e0f329d44
Relate-to: rzr/webthing-iotjs#3
Signed-off-by: Philippe Coval <p.coval@samsung.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>

configs/nucleo-144/f767-netnsh/defconfig

@@ -49,6 +49,7 @@ CONFIG_NET_UDP=y
 CONFIG_NET_UDP_CHECKSUMS=y
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
+CONFIG_NSH_ARCHINIT=y
 CONFIG_NSH_BUILTIN_APPS=y
 CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_LINELEN=64