arm64: dts: qcom: qrb4210-rb2: Fix CD gpio for SDHC2

Card-Detect (CD) gpio for SDHC2 is an active GPIO line. Fix the same.
This allows the uSD card to be properly detected on the board.

Fixes: 8d58a8c0 ("arm64: dts: qcom: Add base qrb4210-rb2 board dts")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230516075908.2323372-3-bhupesh.sharma@linaro.org