ARM: qcom: Add SMP support for KPSSv2

Implement support for the Krait CPU release sequence when the
CPUs are part of the second version of the Krait processor
subsystem.

Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>