drivers: video: introduce VIDEO_FOURCC_TO_STR

This adds a macro to generate a C99 compound literal string, which allow
to use it in debug log messages, such as:
LOG_DBG("The pixel format is '%s'", VIDEO_FOURCC_STR(fmt->pixelformat));

Signed-off-by: Josuah Demangeon <me@josuah.net>
1 file changed