Check if FW_DOWN is reason for SOC_WAKE REQ timeout
There is possiblity that after sending SOC_WAKE_REQ/RESP
SMP2P message WPSS might go down for some reason in that
case ACK for SOC_WAKE REQ/RESP from WPSS can never come
and request will get timedout and ICNSS asserts.To avoid
this, check if FW_DOWN is reason for SOC_WAKE REQ timeout
and avoid assert.
Change-Id: Id371d625b880847bf02392d0f722b58aa30fc2b2