soc: qcom: pil: Increase MBA encryption timeout to 5secs

Increase PIL timeout to give MBA more time for encryption
for modem segments as now wlan segments are also being
dumped in addition to modem and we see that encryption
for WLAN is taking extra time.

Change-Id: Ic1b43c63bcd4f0d46fbd73695a95de5917fddd9e
Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>