kgdbts: only use new asm-generic/ptrace.h api when needed

The new instruction_pointer_set helper is defined for people who have
converted to asm-generic/ptrace.h, so don't use it generally unless
the arch needs it (in which case it has been converted). This should
fix building of kgdb tests for arches not yet converted.

Signed-off-by: Mike Frysinger <[e-mail]>
Acked-by: Stephen Rothwell <[e-mail]>
Cc: Jason Wessel <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/misc/kgdbts.c

···
 		return 1;
 	}
 	/* Readjust the instruction pointer if needed */
-	instruction_pointer_set(&kgdbts_regs, ip + offset);
+	ip += offset;
+#ifdef GDB_ADJUSTS_BREAK_OFFSET
+	instruction_pointer_set(&kgdbts_regs, ip);
+#endif
 	return 0;
 }