packagegroup-ni-extra: add nuttcp
packagegroup-ni-extra: add nuttcp

nuttcp is a useful TCP performance benchmark.  Build it in the feeds.

Note that nuttcp.net is currently down, so this package will only build
if nuttcp-7.2.1.c has been copied to the source mirror, e.g. by
extracting it from a source RPM.

Signed-off-by: Ben Shelton <873d2944fc7a954ed322314738197137e10de387@ni.com>
Reviewed-by: Ken Sharp <e6c8ad8f54d15df4645e8aaf3f7a209bc3688570@ni.com>
---
Natinst-ReviewBoard-ID: 94277

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt