msm: ipa: wwan: increase netdev watchdog timeout value

Increase this to prevent timeout's in corner cases (where
UL wakeup process is underway and watchdog times out).

Change-Id: I8c9f02941f2cf6770777d1b90c6cedd44d089f13
Signed-off-by: Ravi Gummadidala <rgummadi@codeaurora.org>