dt-bindings: net: renesas,etheravb: Drop "int_" prefix and "_n" suffix from interrupt names

This patch updates interrupt-names with dropping "int_" prefix and
"_n" suffix.

Fixes: 1dbd981f ("dt-bindings: net: renesas,etheravb: Document Gigabit Ethernet IP")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210815133926.22860-1-biju.das.jz@bp.renesas.com


Signed-off-by: Rob Herring <robh@kernel.org>