usb: dwc3: disable USB core PHY management

The dwc3 driver manages its PHYs itself so the USB core PHY management
needs to be disabled.

Use the struct xhci_plat_priv hack added by commits 46034a9 ("usb:
host: xhci-plat: add platform data support") and f768e71 ("usb:
host: xhci-plat: add priv quirk for skip PHY initialization") to
propagate the setting for now.

Fixes: 4e88d4c ("usb: add a flag to skip PHY initialization to struct usb_hcd")
Fixes: 178a0bc ("usb: core: hcd: integrate the PHY wrapper into the HCD core")
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Cc: stable <stable@kernel.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220825131836.19769-1-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/dwc3/host.c

@@ -11,8 +11,13 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 
+#include "../host/xhci-plat.h"
 #include "core.h"
 
+static const struct xhci_plat_priv dwc3_xhci_plat_priv = {
+	.quirks = XHCI_SKIP_PHY_INIT,
+};
+
 static void dwc3_host_fill_xhci_irq_res(struct dwc3 *dwc,
 					int irq, char *name)
 {
@@ -92,6 +97,11 @@ int dwc3_host_init(struct dwc3 *dwc)
 		goto err;
 	}
 
+	ret = platform_device_add_data(xhci, &dwc3_xhci_plat_priv,
+					sizeof(dwc3_xhci_plat_priv));
+	if (ret)
+		goto err;
+
 	memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props));
 
 	if (dwc->usb3_lpm_capable)