arm64: dts: qcom: x1e80100-vivobook-s15: enable IRIS

arm64: dts: qcom: x1e80100-vivobook-s15: enable IRIS

Enable IRIS to allow using the hardware-accelerated video codecs. The
firmware is not upstream in linux-firmware yet, so users need to copy it
from Windows to qcom/x1e80100/ASUSTeK/vivobook-s15/qcvss8380.mbn (just like
GPU/ADSP/CDSP firmware).

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Maud Spierings <maud_spierings@hotmail.com>
Link: https://lore.kernel.org/r/20251220-asus_usbc_dp-v3-3-5e244d420d0f@hotmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>