target/ppc: Convert to disas_set_info hook

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

monitor.c

@@ -1310,11 +1310,6 @@ static void memory_dump(Monitor *mon, int count, int format, int wsize,
 
     if (format == 'i') {
         int flags = 0;
-#ifdef TARGET_PPC
-        CPUArchState *env = mon_get_cpu_env();
-        flags = msr_le << 16;
-        flags |= env->bfd_mach;
-#endif
         monitor_disas(mon, cs, addr, count, is_physical, flags);
         return;
     }