unicore32: Fix __ARCH_WANT_STAT64 definition

The __ARCH_WANT_STAT64 macro must be defined before including
asm-generic/unistd.h. I got this right for everything except
unicore32.

Fixes: bf4b6a7d ("y2038: Remove stat64 family from default syscall set")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/unicore32/include/uapi/asm/unistd.h

@@ -13,9 +13,9 @@
 
 #define __ARCH_WANT_RENAMEAT
 #define __ARCH_WANT_SET_GET_RLIMIT
+#define __ARCH_WANT_STAT64
 #define __ARCH_WANT_TIME32_SYSCALLS
 
 /* Use the standard ABI for syscalls. */
 #include <asm-generic/unistd.h>
-#define __ARCH_WANT_STAT64
 #define __ARCH_WANT_SYS_CLONE