Inital bootable defconfig and build script for AM6264SIP

configs/genimage.cfg

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+image boot.vfat {
+    vfat {
+        files = {
+            "tiboot3.bin",
+            "tispl.bin",
+            "u-boot.bin"
+        }
+    }
+    size = 64M
+}
+
+image flip_os.img {
+    hdimage {
+        partition-table-type = "mbr"
+    }
+
+    partition boot {
+        partition-type = 0x0C
+        bootable = "true"
+        image = "boot.vfat"
+        offset = 1M
+    }
+
+    partition rootfs {
+        partition-type = 0x83
+        image = "rootfs.btrfs"
+    }
+}

configs/lira_flip_defconfig

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+BR2_aarch64=y
+BR2_TARGET_GENERIC_HOSTNAME="Lira Flip"
+BR2_TARGET_GENERIC_ISSUE="Lira OS"
+BR2_ROOTFS_MERGED_USR=y
+BR2_ROOTFS_MERGED_BIN=y
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
+BR2_TARGET_ROOTFS_BTRFS=y
+BR2_TARGET_ROOTFS_BTRFS_LABEL="lira_root"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_LATEST_LTS_2_12_VERSION=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="k3"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_TARGET_BOARD="lite"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31_UBOOT=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES="K3_PM_SYSTEM_SUSPEND=1"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_NEEDS_DTC=y
+BR2_TARGET_TI_K3_R5_LOADER=y
+BR2_TARGET_TI_K3_R5_LOADER_BOARD_DEFCONFIG="arm62x_evm_r5"
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2026.07"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="am62x_evm_a53"
+BR2_TARGET_UBOOT_NEEDS_DTC=y
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
+BR2_TARGET_UBOOT_NEEDS_GNUTLS=y
+BR2_TARGET_UBOOT_NEEDS_ATF_BL31=y
+BR2_TARGET_UBOOT_USE_BINMAN=y
+BR2_TARGET_UBOOT_SPL=y
+BR2_TARGET_UBOOT_SPL_NAME="tispl.bin"
+BR2_PACKAGE_HOST_LIBP11=y