qualcommax: move CMCC MR3000D-CI DTS to the DTS dir

Follow the recent change where all DTS files were moved to a dedicated dir.

Fixes: 3a39f682df5d ("qualcommax: ipq50xx: add support for CMCC MR3000D-CI")
Signed-off-by: Robert Marko <robimarko@gmail.com>

diff --git a/target/linux/qualcommax/files/arch/arm64/boot/dts/qcom/ipq5018-mr3000d-ci.dts b/target/linux/qualcommax/dts/ipq5018-mr3000d-ci.dts
similarity index 100%
rename from target/linux/qualcommax/files/arch/arm64/boot/dts/qcom/ipq5018-mr3000d-ci.dts
rename to target/linux/qualcommax/dts/ipq5018-mr3000d-ci.dts