dts: imx8mm-uboot: Add support to pack FlexSPI Header using binman

Add definition for FSPI configuration block and subsequently new offsets for
u-boot-spl and u-boot-itb for CONFIG_FSPI_HEADER option.

Signed-off-by: Mamta Shukla <mamta.shukla@leica-geosystems.com>
Signed-off-by: Thomas Haemmerle <thomas.haemmerle@leica-geosystems.com>
Tested-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
diff --git a/arch/arm/dts/imx8mm-u-boot.dtsi b/arch/arm/dts/imx8mm-u-boot.dtsi
index 9f66cdb..6936343 100644
--- a/arch/arm/dts/imx8mm-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-u-boot.dtsi
@@ -150,6 +150,25 @@
 		filename = "flash.bin";
 		pad-byte = <0x00>;
 
+#ifdef CONFIG_FSPI_CONF_HEADER
+		fspi_conf_block {
+			filename = CONFIG_FSPI_CONF_FILE;
+			type = "blob-ext";
+			size = <0x1000>;
+		};
+
+		spl {
+			filename = "spl.bin";
+			offset = <0x1000>;
+			type = "blob-ext";
+		};
+
+		binman_uboot: uboot {
+			filename = "u-boot.itb";
+			offset = <0x58C00>;
+			type = "blob-ext";
+		};
+#else
 		spl {
 			filename = "spl.bin";
 			offset = <0x0>;
@@ -161,6 +180,7 @@
 			offset = <0x57c00>;
 			type = "blob-ext";
 		};
+#endif
 	};
 };