Issue adding a custom `.dtb` for custom carrier (A603)

Hello, Im trying to integrate this carrier: https://wiki.seeedstudio.com/reComputer_A603_Flash_System/#download-the-peripheral-drivers

However, i'm having a little bit of trouble understanding where the files should go. This is what I have to integrate:

├── bootloader
│   ├── t186ref
│   │   └── BCT
│   │       ├── tegra234-mb1-bct-padvoltage-p3767-hdmi-a03.dtsi
│   │       └── tegra234-mb1-bct-pinmux-p3767-hdmi-a03.dtsi
│   ├── tegra234-mb1-bct-gpio-p3767-dp-a03.dtsi
│   ├── tegra234-mb1-bct-gpio-p3767-hdmi-a03.dtsi
│   └── tegra234-mb2-bct-common.dtsi
└── kernel
    ├── dtb
    │   └── tegra234-p3767-0000-p3509-a02.dtb
    └── Image

What I did was:

Create new machine A603.conf based in p3509-a02-p3767-0000.conf:
Create tegra-binaries/tegra-bootfiles with all the dtsi files.

Create tegra-bootfiles.bbappend


FILESEXTRAPATHS:prepend := "${THISDIR}/${BPN}:"
SRC_URI:append:a603= "\
file://tegra234-mb1-bct-gpio-p3767-dp-a03.dtsi \
file://tegra234-mb1-bct-gpio-p3767-hdmi-a03.dtsi \
file://tegra234-mb1-bct-padvoltage-p3767-hdmi-a03.dtsi \
file://tegra234-mb1-bct-pinmux-p3767-hdmi-a03.dtsi \
file://tegra234-mb2-bct-common.dtsi \
"

CUSTOM_DTSI_DIR := "${THISDIR}/${BPN}" do_install:append:a603() { echo "Installing custom DTSI files for ${machine}" install -m 0644 ${CUSTOM_DTSI_DIR}/tegra234-mb1-bct-gpio-p3767-dp-a03.dtsi ${D}${datadir}/tegraflash/ install -m 0644 ${CUSTOM_DTSI_DIR}/tegra234-mb1-bct-gpio-p3767-hdmi-a03.dtsi ${D}${datadir}/tegraflash/ install -m 0644 ${CUSTOM_DTSI_DIR}/tegra234-mb1-bct-padvoltage-p3767-hdmi-a03.dtsi ${D}${datadir}/tegraflash/ install -m 0644 ${CUSTOM_DTSI_DIR}/tegra234-mb1-bct-pinmux-p3767-hdmi-a03.dtsi ${D}${datadir}/tegraflash/ install -m 0644 ${CUSTOM_DTSI_DIR}/tegra234-mb2-bct-common.dtsi ${D}${datadir}/tegraflash/ }



Now I'm in trouble where `Image` and the `.dtb` should go... Since the `p3509-a02-p3767-0000.conf` conf uses a `.dtb` with the same file, and I'm not sure how to make the `a603` carrier use the `.dtb` from the vendor...

Note: Ive tried following this [article](https://github.com/OE4T/meta-tegra/wiki/Creating-a-custom-MACHINE) however there is no example with `.dtb` and `Image`...

OE4T / meta-tegra

Issue adding a custom `.dtb` for custom carrier (A603) #1554