Integrate linux-seco-rk/D23_dts_modification

Commit: https://git.seco.com/edgehog/bsp/rockchip/linux-seco-rk/-/commit/4438a8d49bda08303a24f0c5fc9cb08e623f1781

[D23][DTS] Add VCC Amp and RS232 B regulators

VCC amp regulator has been added in order to power supply aplifiers. RS232 Enable Power regulators have been added for CPU serial interfaces B. MIPI phy has been enabled in order to manage external camera.

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Commit: https://git.seco.com/edgehog/bsp/rockchip/linux-seco-rk/-/commit/1f6905c3abb5db9190853e28877419b1665dcc2b

[D23][DTS] Add HUB USB and RS232 regulators

Hub USB reset regulator has been added in order to correctly manage hub USB reset. RS232 Enable Power regulators have been added for CPU serial interfaces (A and B). UART 4 enabled.