[app][hwcrypto] Improve C standards compliance

__offsetof => offsetof and include stddef.h

Include lk/compiler.h for countof.

Bug: 110158907
Change-Id: I16af82024ae7ac8e3f575c8db28988c5222ea536
1 file changed
tree: d1cbf3991b3c0586d561ae389c3ca94d42cb7ed5
  1. .clang-format
  2. PREUPLOAD.cfg
  3. app/
  4. platform/
  5. target/