Enable Console4a (mainly display & charger)

[nekorouter]

• enable drm panel driver and gpio charger driver kernel config for console4A
• fix model name to LicheeConsole4A
• add power key (gpio-keys)
• fix gpio-charger gpio pin number
• disable UART3_TXD pin because of gpio-charger occupied this pin
• fix UART3_RXD pin mode to uart (rx for EC chip)
• remove bluetooth definition in uart4 (console4A uses aic8800)
• some tidy up (reveres to default values or delete useless comments)

Summary by Sourcery

Configure Console4A hardware support by enabling display and charger drivers, adding a power key, fixing GPIO and UART assignments, updating the model name, and cleaning up the device tree

New Features:

• Enable DRM panel driver and GPIO charger driver in kernel config
• Add a GPIO-based power key to the device tree

Enhancements:

• Correct the model name to LicheeConsole4A
• Update charger GPIO pin assignment to the proper pin number
• Disable UART3_TXD to free the pin for the charger and set UART3_RXD to UART mode
• Remove Bluetooth function from UART4 since Console4A uses the AIC8800
• Clean up device tree by reverting to default values and removing obsolete comments

[sourcery-ai]

Reviewer's Guide

This PR configures the Console4A (LicheeConsole4A) platform by enabling the DRM panel and GPIO charger drivers in the kernel config and overhauls the device tree: correcting the model name, adding a power key node, adjusting charger and UART pin settings, removing unused Bluetooth definitions, and cleaning up defaults and comments.

File-Level Changes

Change	Details	Files
Enable DRM panel and GPIO charger support in kernel configuration	Enabled DRM panel driver option Enabled GPIO charger driver option	arch/riscv/configs/revyos_defconfig
Update device tree to support Console4A board	Fixed board model name to LicheeConsole4A Added gpio-keys node for power button Corrected gpio-charger pin number and disabled UART3_TXD Reconfigured UART3_RXD pin mode to UART for EC chip Removed Bluetooth UART4 definition (uses AIC8800) Tidied default values and removed obsolete comments	arch/riscv/boot/dts/thead/th1520-lpi4a-console.dts

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[sourcery-ai]

Hey @nekorouter - I've reviewed your changes and they look great!

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