ppc64: export the user copy functions.

When Anton uninlined them, he didn't remember to export them
to modules..

arch/ppc64/lib/usercopy.c

@@ -6,6 +6,7 @@
  * as published by the Free Software Foundation; either version
  * 2 of the License, or (at your option) any later version.
  */
+#include <linux/module.h>
 #include <asm/uaccess.h>
 
 unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
@@ -33,3 +34,8 @@ unsigned long copy_in_user(void __user *to, const void __user *from,
 		n =__copy_tofrom_user(to, from, n);
 	return n;
 }
+
+EXPORT_SYMBOL(copy_from_user);
+EXPORT_SYMBOL(copy_to_user);
+EXPORT_SYMBOL(copy_in_user);
+