* Revert "uboot-rockchip: update NanoPi R2S patches"

This reverts commit bda6f6572be630bcf9a1c8a429e40d8a53033af5.

This commit breaks the onboard ethernet on some units. Revert it for
now.
Signed-off-by: NDavid Bauer <mail@david-bauer.net>

* rockchip: enable Realtek PHY support

The NanoPi R2S features a Realtek Gigabit Ethernet PHY. Enable the
Realtek specific PHY driver to correctly configure internal delays.
Signed-off-by: NDavid Bauer <mail@david-bauer.net>

* uboot-rockchip: fix nanopi-r2s failed to boot on some sd cards

Add regulator-boot-on parameters to vcc_sd.
Add startup-delay-us parameters to vcc_sdio.
This will improve the problem that in some SD cards are failing to boot up.
Signed-off-by: NYuan Tao <ty@wevs.org>

* rockchip: fix NanoPi R2S GMAC clock name

This commit fixes the name for the GMAC clock to gmac_clkin, as this is
the name of the clock provided by the rk3328-clk driver.

Without this commit, the GMAC will not work in TX direction.
Suggested-by: NTobias Waldvogel <tobias.waldvogel@gmail.com>
Signed-off-by: NDavid Bauer <mail@david-bauer.net>
Co-authored-by: NDavid Bauer <mail@david-bauer.net>
Co-authored-by: NYuan Tao <ty@wevs.org>