arm64: dts: rockchip: fix regulator name on rk3399-rock-4

arm64: dts: rockchip: fix regulator name on rk3399-rock-4

[ Upstream commit 69448624b770aa88a71536a16900dd3cc6002919 ]

fix regulator name

ref:
 https://dl.radxa.com/rockpi4/docs/hw/rockpi4/rockpi4_v13_sch_20181112.pdf

Signed-off-by: FUKAUMI Naoki <naoki@radxa.com>
Link: https://lore.kernel.org/r/20220909195006.127957-4-naoki@radxa.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Stable-dep-of: cee572756aa2 ("arm64: dts: rockchip: Disable HS400 for eMMC on ROCK Pi 4")
Signed-off-by: Sasha Levin <sashal@kernel.org>