boot_kpi: Add boot marker for logging boot_kpi in sys node

Boot KPI will be logged for usb enumeration, qmi ready commands
and Modem Out of Reset.

Change-Id: I0fc236a3d39961ea4a7867d518362abe5a797de0
Signed-off-by: Sanjay Dwivedi <sanjaykd@codeaurora.org>
3 files changed