mpi3mr: Add NVData Parameter for Host Timestamp Synchronization

The driver now retrieves the Time Stamp value from Driver Page 1
during load and after controller reset. If the value is valid, it
is used to enable periodic host timestamp synchronization.

This adds a tunable NVData parameter to control the behavior of
host time sync, enhancing flexibility and platform-specific control.

Reviewed by: ssaxena, imp
Differential Revision: https://reviews.freebsd.org/D49748