[Decode] Correct the status report reigster for vp9

Fixes #1416

(cherry picked from commit 3e13ecaf895c24a2a1775c637e2a0380be373763)

Bug: 100927
Change-Id: Ie10229e4a8febedb7115d8701740c729546ed003
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/github.com/intel/media-driver/+/684310
Reviewed-by: Stefan Bossbaly <stefanbossbaly@google.com>