Decompress debug sections when creating debug info

`create_minidebuginfo` can fail when processing objects with compressed
debuginfo. To work around this we can use `llvm-objcopy` to decompress
the debug sections prior to processing.

Test: m
Bug: 305277519
Change-Id: I0b3c1f08dfbcb7f8ebea2607ed3e22d901e63ecd