lrdp_V2 : Parsing refcount of dmabuf and fix the timealive of dmabuf

Parsing the refcount for each dmabuf and correct the Time Alive
for each dmabuf.

And shorting the slabsummary info based on total slab usages.

Change-Id: I7c573d8a9c70786a60156a122f412e0e884c0cb5
Signed-off-by: Ankur Bansal <ankban@codeaurora.org>