arm64: dts: meson-gx: add ATF BL32 reserved-memory region

Add an additional reserved memory region for the BL32 trusted firmware
present in many devices that boot from Amlogic vendor u-boot.

Suggested-by: Mateusz Krzak <[email protected]>
Signed-off-by: Christian Hewitt <[email protected]>
Reviewed-by: Neil Armstrong <[email protected]>
Reviewed-by: Kevin Hilman <[email protected]>
Signed-off-by: Neil Armstrong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: chewitt

arch/arm64/boot/dts/amlogic/meson-gx.dtsi

@@ -49,6 +49,12 @@
 			no-map;
 		};
 
+		/* 32 MiB reserved for ARM Trusted Firmware (BL32) */
+		secmon_reserved_bl32: secmon@5300000 {
+			reg = <0x0 0x05300000 0x0 0x2000000>;
+			no-map;
+		};
+
 		linux,cma {
 			compatible = "shared-dma-pool";
 			reusable;