tools: enable endian checks for all sparse builds

We dropped need for __CHECK_ENDIAN__ for linux,
this mirrors this for tools.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

tools/include/linux/types.h

@@ -42,11 +42,7 @@ typedef __s8  s8;
 #else
 #define __bitwise__
 #endif
-#ifdef __CHECK_ENDIAN__
 #define __bitwise __bitwise__
-#else
-#define __bitwise
-#endif
 
 #define __force
 #define __user