Change interrupt cells to 2 to suppress interrupts_property warning.

Cc: stable@vger.kernel.org
Fixes: 0de0fe95 ("arm64: dts: mediatek: cherry: Enable MT6360 sub-pmic on I2C7")
Link: https://lore.kernel.org/r/20231127132026.165027-1-angelogioacchino.delregno@collabora.comSigned-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>