Zero-initialize HIDL structs before passing

Test: make cts -j123 && cts-tradefed run cts-dev -m \
CtsMediaTestCases --compatibility:module-arg \
CtsMediaTestCases:include-annotation:\
android.platform.test.annotations.RequiresDevice

Bug: 131267328
Bug: 131356202
Merged-In: Ie91b7946f8f4406fd06e9cb4ad883b3a2704f366
Change-Id: Ie91b7946f8f4406fd06e9cb4ad883b3a2704f366
(cherry picked from commit 56173f41)