Remove the "====" pattern to let the comments cleaner and more uniform.

Also, do not use multi-line style for a single line comment.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NNicolin Chen <b42378@freescale.com>
Signed-off-by: NMark Brown <broonie@linaro.org>