tree ba2bd165e9763b6863cc6a48718befc378aabd37
parent da753e35cbd9a7fdad2e9be13a9642fb1d9af968
author Simon Glass <sjg@chromium.org> 1538449956 -0600
committer Simon Glass <sjg@chromium.org> 1539005674 -0600

Makefile: Add a 'check' target for make

At present we use 'make tests' to run the tests. For many projects
'make check' is more common, so support that as well. Also add some help
to 'make help'.

Signed-off-by: Simon Glass <sjg@chromium.org>