misc: tegra-profiler: add additional validations

misc: tegra-profiler: add additional validations

Unwinding: add additional validations for stack pointer
and instruction pointer.

Bug 1495325

Change-Id: Idc8b88be51925b67b8cfc5416ae2204f82f24b41
Signed-off-by: Igor Nabirushkin <inabirushkin@nvidia.com>
Reviewed-on: http://git-master/r/392927
(cherry picked from commit dd041965215e3eece1f84df65634342c7c00986d)
Reviewed-on: http://git-master/r/395105
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Maxim Morin <mmorin@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>