ARM:dts:msm: Remove CPU notifications to RPM for MSM8610v2

RPM uses SPM signals from L2 and each of the APPS core to
determine if it is okay to transition from active set to
sleep set. On 8x10 and 8x26 due to a Cortex-A7 ARM errata
where primary core(C0) when waking up from power collapse
has to wake up all the secondary cores to invalidate
all it's L1 duplicate tag RAMs and power collapse them
again. Due to this there is an unnecessary increase in
SPM-RPM handshake interrupts for secondary cores.

This patch removes the APPS cores notification to RPM in
RPM assisted PC and only L2 handshakes with RPM. This helps
to reduce the interrupt traffic generated by APPS cores to
RPM.

Change-Id: Ic7d30558a583a8e6278cca2c2c0f6aa2ca439c28
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>