arm64: dts: qcom: sc7280-villager: Adjust LTE SKUs

arm64: dts: qcom: sc7280-villager: Adjust LTE SKUs

There have been a few changes since the patch ("arm64: dts: qcom: Add
LTE SKUs for sc7280-villager family")
* New firmware reports LTE boards as "SKU 512" now. Old firmware will
  still report "SKU 0", but that's all pre-production and everyone
  will update.
* It's been relaized that no "-rev0" boards were ever built that were
  WiFi-only. Thus we don't two entries for -rev0.

Adjust the organization a bit.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220829084732.2.I22e256d1ebac577a91fac44d1d12919be7111cd4@changeid