avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/board/samsung/smdk5250/Kconfig

@@ -0,0 +1,38 @@
+if TARGET_SMDK5250
+
+config SYS_BOARD
+	default "smdk5250"
+
+config SYS_VENDOR
+	default "samsung"
+
+config SYS_CONFIG_NAME
+	default "smdk5250"
+
+endif
+
+if TARGET_SNOW
+
+config SYS_BOARD
+	default "smdk5250"
+
+config SYS_VENDOR
+	default "samsung"
+
+config SYS_CONFIG_NAME
+	default "snow"
+
+endif
+
+if TARGET_SPRING
+
+config SYS_BOARD
+	default "smdk5250"
+
+config SYS_VENDOR
+	default "samsung"
+
+config SYS_CONFIG_NAME
+	default "spring"
+
+endif