Fix the SD card detection on FriendlyElec NanoPi R6C/R6S boards.

Signed-off-by: Anton Kirilov <anton.kirilov@arm.com>
Link: https://lore.kernel.org/r/20241219113145.483205-1-anton.kirilov@arm.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>