media: qcom: don't go past the array

As reported by smatch:

	drivers/media/platform/qcom/camss-8x16/camss-vfe.c:1136 vfe_release_wm() error: buffer overflow 'vfe->wm_output_map' 7 <= 7
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/qcom/camss-8x16/camss-vfe.c

@@ -1130,7 +1130,7 @@ static int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id)
 
 static int vfe_release_wm(struct vfe_device *vfe, u8 wm)
 {
-	if (wm > ARRAY_SIZE(vfe->wm_output_map))
+	if (wm >= ARRAY_SIZE(vfe->wm_output_map))
 		return -EINVAL;
 
 	vfe->wm_output_map[wm] = VFE_LINE_NONE;