media: staging: ipu3: replace 0 with false

Replace 0 with false to clear
warning of assignment of 0/1 to bool variable.
Issue detected by coccinelle tool.
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/ipu3/ipu3-css.c

@@ -1450,7 +1450,7 @@ bool imgu_css_pipe_queue_empty(struct imgu_css *css, unsigned int pipe)
 bool imgu_css_queue_empty(struct imgu_css *css)
 {
 	unsigned int pipe;
-	bool ret = 0;
+	bool ret = false;
 
 	for (pipe = 0; pipe < IMGU_MAX_PIPE_NUM; pipe++)
 		ret &= imgu_css_pipe_queue_empty(css, pipe);