dt-bindings: bus: Document breakpoint interrupt for gisb-arb

The GISB arbiter can have a third and optional interrupt to handle GISB
breakpoints.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Florian Fainelli 2020-04-17 17:11:46 -07:00
commit 541b6e6ee7