platform: adsp:Fix prints in app linker loader

platform: adsp:Fix prints in app linker loader

Use dev_* instead of pr_* . This gives better information about the driver and
device that is printing out the logs. Also fixing few minor issues.

Bug 200009740
Bug 200006129

Change-Id: Ie7b765f724ea6e5abc0e3e36e3703fd9f3ef354f
Signed-off-by: Ajay Nandakumar <anandakumarm@nvidia.com>
Reviewed-on: http://git-master/r/437737
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Nitin Kumbhar <nkumbhar@nvidia.com>