Simpledrm driver conflicts with i915drmfb resulting in black screen on TTY (regression?)

If CONFIG_DRM_SIMPLEDRM=Y is being build into the kernel, i915drmfb will not be able to attach and creates instead a new framebuffer device, which results in having a black screen on TTY. Only after X11 is being started, video output starts in this case.

This can be only reproduced, if all options are build into kernel and not used as a module.

This was previously report by me in #10133 (closed) and the patch did fixed the issue for me.

But with newest kernel 6.9.1, the bug seems back. The driver simplefbdrm comes as fb0, while i915drmfb comes as fb1.

@jani Maybe you have an idea? Thanks!