ARM: dts: qcom: sdx55-t55: Represent secure-regions as 64-bit elements

ARM: dts: qcom: sdx55-t55: Represent secure-regions as 64-bit elements

The corresponding MTD code expects the regions to be of 64-bit elements.
Hence, prefix "/bits/ 64", otherwise the regions will not be parsed
correctly.

Fixes: 3263d4be5788 ("ARM: dts: qcom: sdx55: Add basic devicetree support for Thundercomm T55")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210512050141.43338-1-manivannan.sadhasivam@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>