remove dashes and and sort tests

remove dashes on 'make help_tests' output aligns a bit more to main 'make
help' output. Also, sort tests sets so users find quicker the name of the test.

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: If09992ddff95865233b1a311f9a52600d3756556
1 file changed