iot2050: binman: add missing-msg for blobs

Add the 'missing-msg' for blobs for more detailed output on missing system
firmware and SEBoot blobs.

Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov@siemens.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Fix minor typos:
Signed-off-by: Simon Glass <sjg@chromium.org>

arch/arm/dts/k3-am65-iot2050-boot-image.dtsi

@@ -18,6 +18,7 @@
 		blob-ext@0x000000 {
 			offset = <0x000000>;
 			filename = "tiboot3.bin";
+			missing-msg = "iot2050-seboot";
 		};
 
 		blob@0x080000 {
@@ -153,21 +154,25 @@
 		blob-ext@0x6c0000 {
 			offset = <0x6c0000>;
 			filename = "sysfw.itb";
+			missing-msg = "iot2050-sysfw";
 		};
 		/* PG1 sysfw, advanced variant */
 		blob-ext@0x740000 {
 			offset = <0x740000>;
 			filename = "sysfw.itb_HS";
+			missing-msg = "iot2050-sysfw";
 		};
 		/* PG2 sysfw, basic variant */
 		blob-ext@0x7c0000 {
 			offset = <0x7c0000>;
 			filename = "sysfw_sr2.itb";
+			missing-msg = "iot2050-sysfw";
 		};
 		/* PG2 sysfw, advanced variant */
 		blob-ext@0x840000 {
 			offset = <0x840000>;
 			filename = "sysfw_sr2.itb_HS";
+			missing-msg = "iot2050-sysfw";
 		};
 	};
 };

tools/binman/missing-blob-help

@@ -18,6 +18,17 @@ scp-sunxi:
 SCP firmware is required for system suspend, but is otherwise optional.
 Please read the section on SCP firmware in board/sunxi/README.sunxi64
 
+iot2050-seboot:
+See the documentation for IOT2050 board. Your image is missing SEBoot
+which is mandatory for board startup. Prebuilt SEBoot located at
+meta-iot2050/tree/master/recipes-bsp/u-boot/files/prebuild/tiboot3.bin.
+
+iot2050-sysfw:
+See the documentation for IOT2050 board. Your image is missing system
+firmware which is mandatory for board startup. Prebuilt system firmware
+located at meta-iot2050/tree/master/recipes-bsp/u-boot/files/prebuild/
+with sysfw prefix.
+
 k3-rti-wdt-firmware:
 If CONFIG_WDT_K3_RTI_LOAD_FW is enabled, a firmware image is needed for
 the R5F core(s) to trigger the system reset. One possible source is