soc: qcom: pil: Increase Boot FSM timeout value

Commit <7137965d>("soc: pil: qcom: Poll MSS_STATUS instead of
BOOT_STATUS"> polls on MSS_STATUS for completion of modem boot FSM but
does not update the timeout value to account for the new register to
get updated. This leads to instances where PIL loading will timeout and
report a failure even though the Boot FSM has completed.

Change-Id: Iaef4a6a24ba8c651c15633747d3d67b83fc80439
Signed-off-by: Kyle Yan <kyan@codeaurora.org>