usb: host: xhci-rcar: drop of_match_ptr for ID table

The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
matching via PRP0001, even though it might not be relevant here).

  drivers/usb/host/xhci-rcar.c:269:34: error: ‘usb_xhci_of_match’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230311173624.263189-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-rcar.c

@@ -282,7 +282,7 @@ static struct platform_driver usb_xhci_renesas_driver = {
 	.driver	= {
 		.name = "xhci-renesas-hcd",
 		.pm = &xhci_plat_pm_ops,
-		.of_match_table = of_match_ptr(usb_xhci_of_match),
+		.of_match_table = usb_xhci_of_match,
 	},
 };
 module_platform_driver(usb_xhci_renesas_driver);