arm64: dts: qcom: ipq5424: add reserved memory region for bootloader

In IPQ5424, the bootloader collects the system RAM contents upon a crash
for post-morterm analysis. If we don't reserve the memory region used by
the bootloader, linux will consume it. Upon the next boot after a crash,
the bootloader will be loaded in the same region, which could lead to the
loss of some data. sometimes, we may miss out critical information.
Therefore, let's reserve the region used by the bootloader.

Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@quicinc.com>
Reviewed-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250312094948.3376126-1-quic_mmanikan@quicinc.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>