arm64: dts: qcom: msm8992-libra: Fix the memory map

The memory map was wrong. Fix it to prevent the device from randomly
rebooting.

Fixes: 0f5cdb31 ("arm64: dts: qcom: Add Xiaomi Libra (Mi 4C) device tree")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221219131918.446587-2-konrad.dybcio@linaro.org