arm64: dts: qcom: sm8550-hdk: add support for the Display Card overlay

arm64: dts: qcom: sm8550-hdk: add support for the Display Card overlay

The SM8550-HDK board may be connected to a Display Card external PCB,
which is identical to the already supported SM8650-HDK Display Card,
it provides a VTDR6130 display with Goodix Berlin Touch controller, see
also commit bc90f56a1699 ("arm64: dts: sm8650-hdk: add support for the
Display Card overlay") for additional details.

Two overlays are added to support SM8550-HDK plus Display Card and
SM8550-HDK plus Display Card plus Rear Camera Card setups.

Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260311001238.4191034-1-vladimir.zapolskiy@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>