nimble/att: Use packed struct for receiving Find Information Response
nimble/att: Use packed struct for receiving Find Information Response

Use packed structure to map it to received mbuf instead of using
dedicated parsing function. Modern compilers generate effective code
in such case anyway.

X-Original-Commit: fe97914df0e8a0c497a3f737754d8873e8399959

apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble