hackrf: new package

hackrf: new package

This patch adds hackrf/host tools for HackRF, a low cost, open source
Software Defined Radio platform.

Sources of host tools are available on GitHub here:
https://github.com/mossmann/hackrf/tree/master/host

Signed-off-by: Jason Pruitt <jrspruitt@gmail.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
[Arnout:
 - Rename package to hackrf to match upstream name;
 - Reorder dependencies and remove empty line (check-package);
 - Use only sha256 hash;
 - Add hash for license file;
 - Bump to 2018.01.1;
 - Use uploaded tarball rather than github-generated one;
 - Fix dependencies of comment (|| instead of &&)
 - Add UDEV_RULES_GROUP=plugdev in case the build host doesn't have
   this group;
 - Add patch fixing build without C++ compiler.
]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>