usb: gadget: udc: atmel: handle at91sam9rl PMC

The at91sam9rl PMC is not quite the same as the at91sam9g45 one and now has
its own compatible string. Add support for that.

Fixes: 217bace8e548 ("ARM: dts: fix PMC compatible")
Acked-by: Cristian Birsan <cristian.birsan@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/udc/atmel_usba_udc.c

@@ -2017,6 +2017,8 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
 
 	udc->errata = match->data;
 	udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9g45-pmc");
+	if (IS_ERR(udc->pmc))
+		udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9rl-pmc");
 	if (IS_ERR(udc->pmc))
 		udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9x5-pmc");
 	if (udc->errata && IS_ERR(udc->pmc))