Introduce a binding for the Qualcomm APCS global block, exposing a
mailbox for invoking interrupts on remote processors in the system.
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NJassi Brar <jaswinder.singh@linaro.org>