Move deprecated annotation from structs to their fields

Having (deprecated) methods with deprecated types as their arguments
prevent from cleanly doing no-op implementations for them. Moving the
annotation from the structure to all their fields will keep the warning
anywhere they would be used, but won't bother implementations who don't
really provide them.

Bug: 310710841
Test: m
Flag: EXEMPT aidl changes only
Change-Id: I599435cc31d712c371d9d3e7fa5cc538b854cd03