msm: mpq8064: Timestamp properly populated within VCAP

Before this change VCAP was only populating the usec parameter in
timeval. Now VCAP populates sec and accounts for timestamp counter
overflows.

Change-Id: I32b2c49604baba95f56faa483acfe787fdb13b34
Signed-off-by: Terence Hampson <thampson@codeaurora.org>