[media] davinci: dm355: Fix uninitialized variable compiler warnings

drivers/media/platform/davinci/dm355_ccdc.c:593:9: warning: ‘val1’ may be
used uninitialized in this function [-Wuninitialized]
drivers/media/platform/davinci/dm355_ccdc.c:560:6: note: ‘val1’ was declared here
This is a false positive but the compiler has no way to know about it,
so initialize the variable to 0.

Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/davinci/dm355_ccdc.c

@@ -557,7 +557,7 @@ static int ccdc_config_vdfc(struct ccdc_vertical_dft *dfc)
  */
 static void ccdc_config_csc(struct ccdc_csc *csc)
 {
-	u32 val1, val2;
+	u32 val1 = 0, val2;
 	int i;
 
 	if (!csc->enable)