[media] smiapp: Quirk for sensors that only do 8-bit reads

Some sensors implement only 8-bit read functionality and fail on wider
reads. Add a quirk flag for such sensors.

Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/smiapp/smiapp-quirk.h b/drivers/media/video/smiapp/smiapp-quirk.h
index 7a1b3a0..de82cdf 100644
--- a/drivers/media/video/smiapp/smiapp-quirk.h
+++ b/drivers/media/video/smiapp/smiapp-quirk.h
@@ -46,6 +46,7 @@
 
 /* op pix clock is for all lanes in total normally */
 #define SMIAPP_QUIRK_FLAG_OP_PIX_CLOCK_PER_LANE			(1 << 0)
+#define SMIAPP_QUIRK_FLAG_8BIT_READ_ONLY			(1 << 1)
 
 struct smiapp_reg_8 {
 	u16 reg;