video: tegra: host: validate error notifier offset

video: tegra: host: validate error notifier offset

Make sure that the notifier object fits within the supplied buffer.

Bug 1739183

Change-Id: Ifbf46eddea86bedf0236851ea1c3f73e5f820beb
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/1026409
(cherry-picked from commit 4086d2137e9b51137aa335fa264d924c73dea5fc)
Reviewed-on: http://git-master/r/1028145
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>