arm64: dts: qcom: sc7280: Rename crd to crd-r3

There are multiple revisions of CRD boards. The current sc7280-crd.dts
describes revision 3 and 4 (aka CRD 1.0 and 2.0). Support for a newer
version will be added by another patch. Add the revision number to
distinguish it from the versionn. Also add the revision numbers to
the compatible string.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Rajendra Nayak <quic_rjendra@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220316172814.v1.1.I2deda8f2cd6adfbb525a97d8fee008a8477b7b0e@changeid