Simplify the definition for bswap_32 for NetBSD
It should be the same on all NetBSD architectures.
#define bswap_32(x) swap32(x)
#elif defined(__NetBSD__)
#include <sys/types.h>
-#include <machine/bswap.h>
-#if defined(__BSWAP_RENAME) && !defined(__bswap_32)
+#include <sys/bswap.h>
#define bswap_32(x) bswap32(x)
-#endif
#else
#include <byteswap.h>
#endif
