USB: ehci-s5p: add clock gating to suspend/resume

This patch adds clock gating to suspend and resume functions.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-s5p.c

@@ -232,6 +232,8 @@ static int s5p_ehci_suspend(struct device *dev)
 	if (pdata && pdata->phy_exit)
 		pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
 
+	clk_disable(s5p_ehci->clk);
+
 	return rc;
 }
 
@@ -243,6 +245,8 @@ static int s5p_ehci_resume(struct device *dev)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
 
+	clk_enable(s5p_ehci->clk);
+
 	if (pdata && pdata->phy_init)
 		pdata->phy_init(pdev, S5P_USB_PHY_HOST);