iq-x5121-evk: add SoC staging dtbo file

[Jie Gan (jiegan0107)]

The initial SoC staging DTBO includes the TGU device nodes used to enable IPCB logging. IPCB (inter-Processor Communication Bus) is a bus monitoring mechanism within the AOSS (Always On Subsystem) on Qualcomm SoCs.

[Jie Gan (jiegan0107)]

2026-07-24 03:29:27 - INFO - | make[3]: *** No rule to make target 'arch/arm64/boot/dts/qcom/purwa-staging.dtbo'. Stop.

The current qcom-next tag does contain the purwa-staging change. Convert it to daft change until all changes are presenting on both qcom-next and qli2.0.

[Shoudi Li (shoudil)]

Jie Gan (@jiegan0107) Purwa staging change in DT makefile is also needed on canonical kernel branch, once change present in qcom-next, please also backport to canonical kernel dev branch.
qualcomm-linux/pkg-linux-qcom-canonical#50

[Jie Gan (jiegan0107)]

Jie Gan (Jie Gan (@jiegan0107)) Purwa staging change in DT makefile is also needed on canonical kernel branch, once change present in qcom-next, please also backport to canonical kernel dev branch. qualcomm-linux/pkg-linux-qcom-canonical#50

Shoudi Li (@shoudil), PR merged on canonical kernel:
qualcomm-linux/pkg-linux-qcom-canonical#52