arm: dts: rockchip: Include OTP in U-Boot pre-reloc phase for RK3326

arm: dts: rockchip: Include OTP in U-Boot pre-reloc phase for RK3326

Update rk3326-u-boot.dtsi to include OTP in U-Boot pre-reloc phase for
checkboard() to be able to read information about the running SoC model
and variant from OTP and print it during boot:

  U-Boot 2025.07 (Jul 13 2025 - 10:07:16 +0000)

  Model: ODROID-GO Super
  SoC:   RK3326
  DRAM:  1 GiB (total 1022 MiB)

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>