arm64: dts: qcom: lemans-evk: Enable Iris video codec support

arm64: dts: qcom: lemans-evk: Enable Iris video codec support

Enable the Iris video codec accelerator on the Lemans EVK board
and reference the appropriate firmware required for its operation.
This allows hardware-accelerated video encoding and decoding using
the Iris codec engine.

Signed-off-by: Vikash Garodia <quic_vgarodia@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Wasim Nazir <wasim.nazir@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250916-lemans-evk-bu-v5-7-53d7d206669d@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>