Fix some trivial typos found by browsing the code. Done with flyspell. Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de> Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Reviewed-by: Guillaume La Roque<glaroque@baylibre.com> Reviewed-by: Julien Masson <jmasson@baylibre.com>