usb: isp1760: Retrieve pdev memory resource from hcd at remove time

The platform driver remove function needs to release the memory resource
requested at probe time. Instead of retrieving the resource from the
platform device, retrieve it from the usb_hcd. This mimics the behaviour
of the PCI and OF glues, and will make it easier to share code between
all three glue layers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/host/isp1760-if.c

@@ -373,15 +373,11 @@ static int isp1760_plat_probe(struct platform_device *pdev)
 
 static int isp1760_plat_remove(struct platform_device *pdev)
 {
-	struct resource *mem_res;
-	resource_size_t mem_size;
 	struct usb_hcd *hcd = platform_get_drvdata(pdev);
 
 	usb_remove_hcd(hcd);
 
-	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mem_size = resource_size(mem_res);
-	release_mem_region(mem_res->start, mem_size);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 
 	usb_put_hcd(hcd);