i2c: Fix OMAP clock prescaler to match the comment

Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>

drivers/i2c/busses/i2c-omap.c

@@ -231,8 +231,8 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
 		 * 13		2		1
 		 * 19.2		2		1
 		 */
-		if (fclk_rate > 16000000)
-			psc = (fclk_rate + 8000000) / 12000000;
+		if (fclk_rate > 12000000)
+			psc = fclk_rate / 12000000;
 	}
 
 	/* Setup clock prescaler to obtain approx 12MHz I2C module clock: */