rockchip64: add edge kernel support for Youyeetoo YY3588

- Add mainline device tree for YY3588 board
- Enable all peripherals: USB 3.0, Ethernet, PCIe, HDMI, audio
- Configure ES8323 audio codec with speaker amplifier
- Add RK8602 PMIC regulators for CPU/NPU power
- Enable I2C buses for PMIC, RTC, and audio codec
- Fix pinctrl conflicts (I2C1 M2, disable SFC for UART7)
- Configure USB-C and USB 3.0 host ports
- Add HDMI0 output with HDPTX PHY
- Enable thermal management with PWM fan
- Add SD card and eMMC storage support
- Configure all UARTs, I2S audio, and SPI buses

Author: SuperKali

config/boards/youyeetoo-yy3588.csc

@@ -5,7 +5,7 @@ BOARDFAMILY="rockchip-rk3588"
 BOARD_MAINTAINER="SuperKali"
 BOOTCONFIG="youyeetoo-yy3588-rk3588_defconfig"
 BOOT_SOC="rk3588"
-KERNEL_TARGET="vendor"
+KERNEL_TARGET="vendor,edge"
 FULL_DESKTOP="yes"
 BOOT_LOGO="desktop"
 IMAGE_PARTITION_TABLE="gpt"