modetest: print -s and -P options grammar in usage
It was unclear how #mode could be used, so replace usage print by -s and -P options grammar
Cc: @MarijnS95
Signed-off-by: Neil Armstrong neil.armstrong@linaro.org
It was unclear how #mode could be used, so replace usage print by -s and -P options grammar
Cc: @MarijnS95
Signed-off-by: Neil Armstrong neil.armstrong@linaro.org