arm64: dts: rockchip: Add eeprom vcc-supply for Radxa ROCK 3C

arm64: dts: rockchip: Add eeprom vcc-supply for Radxa ROCK 3C

[ Upstream commit 260316d35cf8f8606c5ed7a349cc92e1e71d8150 ]

The VCC supply for the BL24C16 EEPROM chip found on Radxa ROCK 3C is
vcca1v8_pmu. [1] Describe this supply.

[1] https://dl.radxa.com/rock3/docs/hw/3c/v1400/radxa_rock_3c_v1400_schematic.pdf p.13

Fixes: ee219017ddb50 ("arm64: dts: rockchip: Add Radxa ROCK 3C")
Signed-off-by: FUKAUMI Naoki <naoki@radxa.com>
Link: https://patch.msgid.link/20251112035133.28753-4-naoki@radxa.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>