mhi: cntrl: qcom: timesync IPC log buffer support

Add a separate IPC log buffer for time synchronized logs to
log local and remote timestamps and aid in debug.

CRs-Fixed: 2377061
Change-Id: Ia8ddab5dc53cc03e98014330fc360014e14be2f9
Acked-by: Bhaumik Vasav Bhatt <bbhatt@qti.qualcomm.com>
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>