rockchip: rk3399-roc-pc: Sync DT from v6.8 and update defconfig

rockchip: rk3399-roc-pc: Sync DT from v6.8 and update defconfig

Sync rk3399-roc-pc related device tree from Linux kernel v6.8.

Add SF_DEFAULT_SPEED=30000000 and SPI_FLASH_SFDP_SUPPORT=y to improve
support for booting from SPI flash.

Add ROCKCHIP_IODOMAIN=y to configure io-domain voltage.

Add MMC_SDHCI_SDMA=y to use DMA transfer for eMMC.

Add PHY_REALTEK=y and DM_ETH_PHY=y to support ethernet PHY.

Remove SPL_TINY_MEMSET=y to use full memset in SPL.

Remove USE_PREBOOT=y to speed up booting, standard boot will init USB
after faster boot media has been evaluated.

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