of/irq: Add a quirk for controllers with their own definition of interrupt-map

of/irq: Add a quirk for controllers with their own definition of interrupt-map

Since commit 041284181226 ("of/irq: Allow matching of an interrupt-map
local to an interrupt controller"), a handful of interrupt controllers
have stopped working correctly. This is due to the DT exposing a
non-sensical interrupt-map property, and their drivers relying on the
kernel ignoring this property.

Since we cannot realistically fix this terrible behaviour, add a quirk
for the limited set of devices that have implemented this monster,
and document that this is a pretty bad practice.

Fixes: 041284181226 ("of/irq: Allow matching of an interrupt-map local to an interrupt controller")
Cc: Rob Herring <[email protected]>
Cc: John Crispin <[email protected]>
Cc: Biwen Li <[email protected]>
Cc: Chris Brandt <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Sander Vanheule <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Tested-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Rob Herring <[email protected]>