libcamera: formats: PixelFormatInfo: Add v4l2 lookup function

Add a lookup function for PixelFormatInfo that takes a V4L2PixelFormat.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

include/libcamera/internal/formats.h

@@ -51,6 +51,7 @@ public:
 	bool isValid() const { return format.isValid(); }
 
 	static const PixelFormatInfo &info(const PixelFormat &format);
+	static const PixelFormatInfo &info(const V4L2PixelFormat &format);
 
 	/* \todo Add support for non-contiguous memory planes */
 	const char *name;