target-m68k: Use type_register() instead of type_register_static()

According to its documentation, type_register_static()'s TypeInfo
argument should exist for the life type of the type.
Therefore use type_register() when registering the list of CPU subtypes.

No functional change with the current implementation.

Cf. 918fd0839eeafc83bd4984364321a947d29041fe for arm.

Signed-off-by: Andreas Färber <afaerber@suse.de>

target-m68k/cpu.c

diff --git a/target-m68k/cpu.c b/target-m68k/cpu.c
index e6df1ee..5c78031 100644
--- a/target-m68k/cpu.c
+++ b/target-m68k/cpu.c
@@ -162,7 +162,7 @@
         .instance_init = info->instance_init,
     };
 
-    type_register_static(&type_info);
+    type_register(&type_info);
 }
 
 static const TypeInfo m68k_cpu_type_info = {