arm64: dts: qcom: sc7280: Add secondary MI2S pinmux specifications for CRD 3.0/3.1

Add drive strength property for secondary MI2S on
sc7280 based platforms of rev5+ (aka CRD 3.0/3.1) boards.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1655108645-1517-3-git-send-email-quic_srivasam@quicinc.com