usb: phy: mxs: use readl(), writel() instead of the _relaxed() versions

This patch converts the mxs-phy driver from readl_relaxed(), writel_relaxed()
to the plain readl(), writel() functions, which are available on all platforms.

This is done to enable compile time testing on non ARM platforms.
Reported-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/otg/mxs-phy.c

@@ -48,10 +48,10 @@ static void mxs_phy_hw_init(struct mxs_phy *mxs_phy)
 	stmp_reset_block(base + HW_USBPHY_CTRL);
 
 	/* Power up the PHY */
-	writel_relaxed(0, base + HW_USBPHY_PWD);
+	writel(0, base + HW_USBPHY_PWD);
 
 	/* enable FS/LS device */
-	writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 |
+	writel(BM_USBPHY_CTRL_ENUTMILEVEL2 |
 	       BM_USBPHY_CTRL_ENUTMILEVEL3,
 	       base + HW_USBPHY_CTRL_SET);
 }
@@ -70,7 +70,7 @@ static void mxs_phy_shutdown(struct usb_phy *phy)
 {
 	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
 
-	writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+	writel(BM_USBPHY_CTRL_CLKGATE,
 	       phy->io_priv + HW_USBPHY_CTRL_SET);
 
 	clk_disable_unprepare(mxs_phy->clk);
@@ -81,15 +81,15 @@ static int mxs_phy_suspend(struct usb_phy *x, int suspend)
 	struct mxs_phy *mxs_phy = to_mxs_phy(x);
 
 	if (suspend) {
-		writel_relaxed(0xffffffff, x->io_priv + HW_USBPHY_PWD);
-		writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+		writel(0xffffffff, x->io_priv + HW_USBPHY_PWD);
+		writel(BM_USBPHY_CTRL_CLKGATE,
 		       x->io_priv + HW_USBPHY_CTRL_SET);
 		clk_disable_unprepare(mxs_phy->clk);
 	} else {
 		clk_prepare_enable(mxs_phy->clk);
-		writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+		writel(BM_USBPHY_CTRL_CLKGATE,
 		       x->io_priv + HW_USBPHY_CTRL_CLR);
-		writel_relaxed(0, x->io_priv + HW_USBPHY_PWD);
+		writel(0, x->io_priv + HW_USBPHY_PWD);
 	}
 
 	return 0;
@@ -102,7 +102,7 @@ static int mxs_phy_on_connect(struct usb_phy *phy,
 		(speed == USB_SPEED_HIGH) ? "high" : "non-high");
 
 	if (speed == USB_SPEED_HIGH)
-		writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
 		       phy->io_priv + HW_USBPHY_CTRL_SET);
 
 	return 0;
@@ -115,7 +115,7 @@ static int mxs_phy_on_disconnect(struct usb_phy *phy,
 		(speed == USB_SPEED_HIGH) ? "high" : "non-high");
 
 	if (speed == USB_SPEED_HIGH)
-		writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
 		       phy->io_priv + HW_USBPHY_CTRL_CLR);
 
 	return 0;