mhi: core: add time synchronized logs support

Whenever important events such as state changes occur on device,
it can help in debug to compare device timestamps and co-relate
those with host-side processing. Add support to log remote time
for these important events from MHI core layer.

CRs-Fixed: 2377061
Change-Id: Ieffd28e8049266e05a6c7397238083f02b2c095f
Acked-by: Bhaumik Vasav Bhatt <bbhatt@qti.qualcomm.com>
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>