led_gen: Add an outputdir cmdline option

The output is currently placed in the same directory as the
script.  Default instead to cwd, and allow the user to specify
so out of tree builds can work.

Change-Id: Ia7b94f509e0239f7697634d7a52f22e38d7efc6a
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
2 files changed