reproduce (this is a W=1 build):
        git remote add wsa https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git
        git fetch wsa i2c/for-next
        git checkout wsa/i2c/for-next
        b4 shazam https://lore.kernel.org/r/20231012035838.2804064-3-chris.packham@alliedtelesis.co.nz
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/i2c/busses/