USB: mxc: gadget: remove 60mhz clock requirement for freescale mx51 usb core

renamed fsl_mx3_udc.c -> fsl_mxc_udc.c
for mx51, usb core is clocked from sources that are not 60mhz.

Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/Makefile

@@ -20,7 +20,7 @@ obj-$(CONFIG_USB_ATMEL_USBA)	+= atmel_usba_udc.o
 obj-$(CONFIG_USB_FSL_USB2)	+= fsl_usb2_udc.o
 fsl_usb2_udc-objs		:= fsl_udc_core.o
 ifeq ($(CONFIG_ARCH_MXC),y)
-fsl_usb2_udc-objs		+= fsl_mx3_udc.o
+fsl_usb2_udc-objs		+= fsl_mxc_udc.o
 endif
 obj-$(CONFIG_USB_M66592)	+= m66592-udc.o
 obj-$(CONFIG_USB_R8A66597)	+= r8a66597-udc.o

drivers/usb/gadget/fsl_mxc_udc.c

@@ -50,12 +50,14 @@ int fsl_udc_clk_init(struct platform_device *pdev)
 		goto egusb;
 	}
 
-	freq = clk_get_rate(mxc_usb_clk);
-	if (pdata->phy_mode != FSL_USB2_PHY_ULPI &&
-	    (freq < 59999000 || freq > 60001000)) {
-		dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq);
-		ret = -EINVAL;
-		goto eclkrate;
+	if (!cpu_is_mx51()) {
+		freq = clk_get_rate(mxc_usb_clk);
+		if (pdata->phy_mode != FSL_USB2_PHY_ULPI &&
+		    (freq < 59999000 || freq > 60001000)) {
+			dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq);
+			ret = -EINVAL;
+			goto eclkrate;
+		}
 	}
 
 	ret = clk_enable(mxc_usb_clk);