ARM: dts: msm: add IPA smp2p entries for sdm845

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.

Change-Id: Ie20772d787b42aa6e1043d6d60959fc23a56e719
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>