riscv: dts: starfive: visionfive 2: add tf cd-gpios

Per VisionFive 2 1.2B, and 1.3A boards' SCH, GPIO 41 is used as
card detect. So add "cd-gpios" property for this.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>