binman: Convert mkimage to Entry_section

This is needed to handle mkimage with inner section located itself in a
section.

Signed-off-by: Marek Vasut <[email protected]>
Use BuildSectionData() instead of ObtainContents(), add tests and a few
other minor fixes:
Signed-off-by: Simon Glass <[email protected]>

1 files changed, 24 insertions, 0 deletions

diff --git a/tools/binman/test/283_mkimage_special.dts b/tools/binman/test/283_mkimage_special.dts
new file mode 100644
index 00000000000..c234093e6ec
--- /dev/null
+++ b/tools/binman/test/283_mkimage_special.dts
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		mkimage {
+			args = "-T script";
+
+			u-boot {
+			};
+
+			hash {
+			};
+
+			imagename {
+				type = "u-boot";
+			};
+		};
+	};
+};