arm64: dts: qcom: sc7280: Define EC and H1 nodes for IDP/CRD

The IDP2 and CRD boards share the EC and H1 parts, so define
all related device nodes into a common file and include them
in the idp2 and crd dts files to avoid duplication.

Signed-off-by: Kshitiz Godara <kgodara@codeaurora.org>
Signed-off-by: Rajendra Nayak <quic_rjendra@quicinc.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1638185497-26477-4-git-send-email-quic_rjendra@quicinc.com