Add a --help option to getpcaps.

Browsing the debian bug tracker, I noted this:

  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560260

the output of getpcaps has been ugly forever and since I've been
meaning to fix that I figured I'd add some optional arguments too:

Added: --help, --usage, --verbose, --ugly, --legacy

Example:

$ ./progs/getpcaps 1 --verbose 1 --ugly 1
1: =ep
Capabilities for '1': =ep
Capabilities for `1': =ep

Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
1 file changed