ARM: dts: msm: add IPA smp2p entries for msmcobalt

Add smp2p entries to device tree to enable IPA driver
handshake with modem. This handshake is used to synchronize IPA clocks
vote with modem during apps or modem crash.

CRs-Fixed: 988881
Change-Id: Idc8ac5fc273d91035254c675c7cedefa9a92a5a5
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>