arm64: dts: meson-g12b-odroid: Add initial support for Hardkernel ODROID-N2L

ODROID-N2L is a variant SBC in small form factor and some peripherals
are removed from ODROID-N2PLUS based on S922X SoC.

- On-board ethernet is removed
- On-board RTC is removed
- USB 3.0 hub is removed, so one USB 2.0 and one USB 3.0 host ports
  are available
- Huge heatsink is replaced with 40x40mm heatsink, 5V active heatsink
  is recommended or a tall passive sink is optional
- 3.5mm earjack is removed
- IR remote receiver is removed
- MIPI DSI port is added new but not yet supported

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Link: https://lore.kernel.org/r/20230122-topic-odroid-n2l-upstream-initial-v2-3-8d3fea6d403d@linaro.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>