mmc: sdhci-s3c: fix the wrong number of max bus clocks

We can use up to four bus-clocks; but on module remove, we didn't
disable the fourth bus clock.
Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/sdhci-s3c.c

@@ -792,7 +792,7 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 	pm_runtime_disable(&pdev->dev);
 
 	clk_disable(sc->clk_bus[sc->cur_clk]);
-	for (ptr = 0; ptr < 3; ptr++) {
+	for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
 		if (sc->clk_bus[ptr]) {
 			clk_put(sc->clk_bus[ptr]);
 		}