gdbserver: turn breakpoint kind-related target ops into methods
gdbserver/ChangeLog:
2020-02-20 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Turn process_stratum_target's breakpoint_kind_from_pc,
sw_breakpoint_from_kind, and breakpoint_kind_from_current_state
ops into methods of process_target.
* target.h (struct process_stratum_target): Remove the target op.
(class process_target): Add the target op.
(target_breakpoint_kind_from_pc): Update the macro.
(target_breakpoint_kind_from_current_state): Update the macro.
(default_breakpoint_kind_from_pc): Remove declaration.
* target.cc (default_breakpoint_kind_from_pc): Turn into ...
(process_target::breakpoint_kind_from_pc): ... this.
(process_target::breakpoint_kind_from_current_state): Define.