msm: pil-q6v5-mss: Increase timeout for PBL and MBA boot to 1 second

When secure boot features are enabled, the MBA may need more than
100 ms before it is ready to accept commands. Increase the default
timeout to be arbitrarily large.

Change-Id: I3b9d63f13140e7c044650c28be39efea41dcf192
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>