Zero-init HIDL core types (all)

hidl_pointer - already zero initialized
hidl_string - now memset to 0
hidl_array - has no pad to initialize, default initialize since we
    now expect structs to be default initialized to sane values.
hidl_vec - now memset to 0
hidl_memory - has three aligned(8) items which are always set
hidl_version - unused, but has two uint16_t entries

Zero-init HIDL core types (hidl_handle).
Has 7 padded bits at the end.

Since they are passed across processes.

Bug: 131356202
Test: print out values

Change-Id: I3979232879bb437d17d3a6f6013b53b2951a2138
Merged-In: I56bacf9ca7ac51d73449d11883c6224e214b8773
Merged-In: I8dd52e196e1585028d91d97f00861021c21ec09c
(cherry picked from commit aa79ac59c8907ea608392488f2d24889cf6778c8)
3 files changed