ARM: dts: qcom: Add nodes necessary for SMP boot

Add the necessary nodes to support SMP on MSM8660, MSM8960, and
MSM8974/APQ8074. While we're here also add in the error
interrupts for the Krait cache error detection.

Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
[sboyd: Split into separate patch, add error interrupts]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>