Add VINTF declaration for ISecureStorage am: 11eec10630

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3532772

Change-Id: I6b69fa68da4a232da76fe1fdaa68fb209563f43a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>