Update the SAW2 DT bindings to add qcom,apq8064-saw2-v1.1-cpu compatible
binding string to configure SPM registers and allow the SPM to put the
core in deeper idle states when the core is idle.
Signed-off-by: Lina Iyer <lina.iyer@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Kumar Gala <galak@codeaurora.org> Signed-off-by: Olof Johansson <olof@lixom.net>