add new board armsom-aim7-io

[amazingfate]

Description

armsom aim7 is a SoM compatible with Jetson Nano: https://docs.armsom.org/armsom-aim7
armsom aim7-io is jeston nano base board with armsom aim7.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

• ./compile.sh BOARD=armsom-aim7-io BRANCH=vendor BUILD_MINIMAL=no DEB_COMPRESS=xz KERNEL_CONFIGURE=no RELEASE=noble KERNEL_GIT=shallow BUILD_DESKTOP=yes DESKTOP_APPGROUPS_SELECTED= DESKTOP_ENVIRONMENT=gnome DESKTOP_ENVIRONMENT_CONFIG_NAME=config_base ENABLE_EXTENSIONS="mesa-vpu"
• usb, pcie, ethernet, hdmi works

Checklist:

Please delete options that are not relevant.

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[amazingfate]

This pr depends on armbian/linux-rockchip#214