sim: common: include sim-types.h in the endian header directly

This is a bit redundant for most ports as they go through sim-basics.h
which always includes sim-types.h before including sim-endian.h, but in
order to unify ppc's sim-endian code, we need this include here.  Plus,
it's the directly we generally want to go to get away from one header
that defines all APIs and causes hard to untangle dependencies.

sim/common/sim-endian.h

@@ -23,6 +23,8 @@
 #ifndef SIM_ENDIAN_H
 #define SIM_ENDIAN_H
 
+#include "sim-types.h"
+
 /* C byte conversion functions */
 
 INLINE_SIM_ENDIAN(unsigned_1) endian_h2t_1(unsigned_1 x);