sunxi: decide the inclusion of SCP by SCP_ADDR existence

There are more Allwinner SoCs that do not have a SCP now.

When there's no SCP_ADDR macro defined, we can assume there's no SCP
available.

Drop the scp part of FIT description when SCP_ADDR does not exist.

Signed-off-by: Icenowy Zheng <icenowy@sipeed.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/arch/arm/dts/sunxi-u-boot.dtsi b/arch/arm/dts/sunxi-u-boot.dtsi
index 06da009..4a6ed3a 100644
--- a/arch/arm/dts/sunxi-u-boot.dtsi
+++ b/arch/arm/dts/sunxi-u-boot.dtsi
@@ -64,7 +64,7 @@
 					};
 				};
 
-#ifndef CONFIG_MACH_SUN50I_H616
+#ifdef SCP_ADDR
 				scp {
 					description = "SCP firmware";
 					type = "firmware";
@@ -92,7 +92,7 @@
 				@config-SEQ {
 					description = "NAME";
 					firmware = "atf";
-#ifdef CONFIG_MACH_SUN50I_H616
+#ifndef SCP_ADDR
 					loadables = "uboot";
 #else
 					loadables = "scp", "uboot";