drmn.ko depends on acpi unconditionally

[chmeeedalf]

drmn.ko cannot be loaded on powerpc64 due to a dependency on acpi_iic_driver, yielding the following error message:

link_elf: symbol acpi_iicbus_driver undefined KLD radeonkms.ko: depends on drmn - not available or version mismatch

The attached patch fixes this.

fix_drm_ppc.diff.txt

[evadot]

Fixed some time ago.

[pkubaj]

This issue is still relevant.