usb: host: ehci-sh: Remove unused platform data support

ehci_sh_platdata was never used, remove it. It can be resurrected from
git history when needed.

This basically reverts commit 3e0c70d0 ("usb: ehci-sh: Add PHY
init function with platform data").
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Link: https://lore.kernel.org/r/20191206132849.29406-1-geert+renesas@glider.beSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-sh.c

@@ -8,7 +8,6 @@
  */
 #include <linux/platform_device.h>
 #include <linux/clk.h>
-#include <linux/platform_data/ehci-sh.h>
 
 struct ehci_sh_priv {
 	struct clk *iclk, *fclk;
@@ -76,7 +75,6 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
 {
 	struct resource *res;
 	struct ehci_sh_priv *priv;
-	struct ehci_sh_platdata *pdata;
 	struct usb_hcd *hcd;
 	int irq, ret;
 
@@ -89,8 +87,6 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
 		goto fail_create_hcd;
 	}
 
-	pdata = dev_get_platdata(&pdev->dev);
-
 	/* initialize hcd */
 	hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev,
 			     dev_name(&pdev->dev));
@@ -127,9 +123,6 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
 	clk_enable(priv->fclk);
 	clk_enable(priv->iclk);
 
-	if (pdata && pdata->phy_init)
-		pdata->phy_init();
-
 	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to add hcd");

include/linux/platform_data/ehci-sh.h

-/* SPDX-License-Identifier: GPL-2.0
- *
- * EHCI SuperH driver platform data
- *
- * Copyright (C) 2012  Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
- * Copyright (C) 2012  Renesas Solutions Corp.
- */
-
-#ifndef __USB_EHCI_SH_H
-#define __USB_EHCI_SH_H
-
-struct ehci_sh_platdata {
-	void (*phy_init)(void); /* Phy init function */
-};
-
-#endif /* __USB_EHCI_SH_H */