arm64: dts: renesas: r8a77995: draak: drop "avb_phy_int" from avb_pins

Since the Ethernet AVB driver doesn't support AVB_PHY_INT handling
and it will be handled by a phy driver as a gpio pin, this patch
removes the "avb_phy_int" from the avb_pins node.

Reported-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Fixes: 4503b50e ("arm64: dts: renesas: r8a77995: draak: enable EthernetAVB")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>