auxdisplay: Take over maintainership, but in Odd Fixes mode

I have no time for this, but since it looks like I'm the main
contributor for the last few years to the subsystem, I'll take
it for now. Geert agreed to help me as a designated reviewer.
Let's see how it will go...

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>