ARM: at91: pm: add sama7g5 shdwc

Add SAMA7G5 SHDWC.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20210415105010.569620-25-claudiu.beznea@microchip.com

arch/arm/mach-at91/pm.c

@@ -794,6 +794,7 @@ securam_fail:
 static const struct of_device_id atmel_shdwc_ids[] = {
 	{ .compatible = "atmel,sama5d2-shdwc" },
 	{ .compatible = "microchip,sam9x60-shdwc" },
+	{ .compatible = "microchip,sama7g5-shdwc" },
 	{ /* sentinel. */ }
 };