Split out the common base of Linux hardware breakpoint/watchpoint
support for AArch64 into a Utility class, and use it to implement
the matching support on FreeBSD.
Differential Revision: https://reviews.llvm.org/D96548
Ensure that the llvm::Error instances are always considered handled
by replacing LLDB_LOG with LLDB_LOG_ERROR.
Differential Revision: https://reviews.llvm.org/D96558