platform: tegra: nvadsp: Add APERTURE reg offset

platform: tegra: nvadsp: Add APERTURE reg offset

Adding APERTURE reg offset to ARAM save/restore which was missing due
to which ARAM save/restore APIs were storing from a different offset.

Bug 1461655

Change-Id: Icddb0cc5b878e8029fdbe4191d27a169bf968352
Signed-off-by: Ajay Nandakumar <anandakumarm@nvidia.com>
Reviewed-on: http://git-master/r/722692
(cherry picked from commit cf02daf88870cc32cc8ecff448c249a602650dfc)
Reviewed-on: http://git-master/r/731725
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Nitin Kumbhar <nkumbhar@nvidia.com>