OMAP2: omap-keypad: Enable more than 6 rows

There is no reason to limit the GPIO rows to 6 for
OMAP2.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/input/keyboard/omap-keypad.c

@@ -137,7 +137,7 @@ static void omap_kp_scan_keypad(struct omap_kp *omap_kp, unsigned char *state)
 		/* read the keypad status */
 		for (col = 0; col < omap_kp->cols; col++) {
 			set_col_gpio_val(omap_kp, ~(1 << col));
-			state[col] = ~(get_row_gpio_val(omap_kp)) & 0x3f;
+			state[col] = ~(get_row_gpio_val(omap_kp)) & 0xff;
 		}
 		set_col_gpio_val(omap_kp, 0);