media: i2c: imx219: Correct the minimum vblanking value

The datasheet for this sensor documents the minimum vblanking as being
32 lines. It does fix some problems with occasional black lines at the
bottom of images (tested on Raspberry Pi).

Signed-off-by: David Plowman <[email protected]>

Author: davidplowman

drivers/media/i2c/imx219.c

@@ -55,7 +55,7 @@
 #define IMX219_VTS_30FPS_640x480	0x06e3
 #define IMX219_VTS_MAX			0xffff
 
-#define IMX219_VBLANK_MIN		4
+#define IMX219_VBLANK_MIN		32
 
 /*Frame Length Line*/
 #define IMX219_FLL_MIN			0x08a6