reproduce (this is a W=1 build):
        git remote add lumag-msm https://gitlab.freedesktop.org/lumag/msm
        git fetch --no-tags lumag-msm msm8974-iommu
        git checkout 127aa344565c14c5a6902baada9fe9fb24752029

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/firmware/qcom/