OMXNodeInstance: Validate size of structures

Bug: 273935108
Bug: 273934916
Bug: 273935036
Bug: 273934540
Bug: 273935851
Bug: 273729671
Bug: 273933441
Bug: 273937551
Bug: 273935851

Test: poc in bug
(cherry picked from https://partner-android-review.googlesource.com/q/commit:a8bb1fc5da615305826220b9b1b1b30b7dedf6a9)
Merged-In: I5130d015cbce1b30d6f4fffeaa4cf3b35c974184
Change-Id: I5130d015cbce1b30d6f4fffeaa4cf3b35c974184
(cherry picked from commit b5cdaa40)