misc: tegra-profiler: add group samples

misc: tegra-profiler: add group samples

Group CPU cycles and cache misses samples.
To reduce the amount of data passed from the target to the host,
we can group samples that have a lot of common information.

Bug 1447582

Change-Id: I9b16bf4f18455ff6219fd58373eceba4cb71e352
Signed-off-by: Igor Nabirushkin <inabirushkin@nvidia.com>
Reviewed-on: http://git-master/r/360133
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>