arm64: dts: qcom: sc7280: Mark all Qualcomm reference boards as LTE

When the modem node was re-located to a separate LTE source file
"sc7280-herobrine-lte-sku.dtsi", some of the previous LTE users
weren't marked appropriately. Fix this by marking all Qualcomm
reference devices as LTE.

Suggested-by: Douglas Anderson <dianders@chromium.org>
Fixes: d42fae73 ("arm64: dts: qcom: Add LTE SKUs for sc7280-villager family")
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221110070813.1777-1-quic_sibis@quicinc.com