rockchip: board: puma-rk3399: update .its file to use new features

This commit updates the .its file for the RK3399-Q7 to use the new
features and demonstrates how to use those:
 * it marks the ATF as the 'firmware'
 * it tracks the OS-type for U-Boot and ATF
 * it loads the PMU (M0) firmware to DRAM and records the location
   to /fit-images (where our ATF reads it from)

With the handoff of the next-stage FDT to ATF in place, we can now use
this to pass information about the load addresses and names of each
loadables to ATF: now we can load the M0 firmware into DRAM and avoid
overwriting parts of the SPL stage.  This is achieved by changing our
.its-file to use an available area of DRAM as the load-address.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

board/theobroma-systems/puma_rk3399/fit_spl_atf.its

@@ -17,6 +17,7 @@
 			description = "U-Boot (64-bit)";
 			data = /incbin/("../../../u-boot-nodtb.bin");
 			type = "standalone";
+			os = "U-Boot";
 			arch = "arm64";
 			compression = "none";
 			load = <0x00200000>;
@@ -26,16 +27,17 @@
 			data = /incbin/("../../../bl31-rk3399.bin");
 			type = "firmware";
 			arch = "arm64";
+			os = "arm-trusted-firmware";
 			compression = "none";
-			load = <0x00001000>;
-			entry = <0x00001000>;
+			load = <0x1000>;
+			entry = <0x1000>;
 		};
 		pmu {
 		        description = "Cortex-M0 firmware";
 			data = /incbin/("../../../rk3399m0.bin");
 			type = "pmu-firmware";
 			compression = "none";
-			load = <0xff8c0000>;
+			load = <0x180000>;
                 };
 		fdt {
 			description = "RK3399-Q7 (Puma) flat device-tree";
@@ -49,8 +51,8 @@
 		default = "conf";
 		conf {
 			description = "Theobroma Systems RK3399-Q7 (Puma) SoM";
-			firmware = "uboot";
-			loadables = "atf";
+			firmware = "atf";
+			loadables = "uboot", "pmu";
 			fdt = "fdt";
 		};
 	};