Fix hexagon build error

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Merge tag 'hexagon-for-linus-v4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hexagon fix from Guenter Roeck:
 "This fixes a build error seen when building hexagon images.

  Richard sent me an Ack, but didn't reply when asked if he wants me to
  send the patch to you directly, so I figured I'd just do it"

* tag 'hexagon-for-linus-v4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hexagon: Use raw_copy_to_user

arch/hexagon/mm/uaccess.c

@@ -37,15 +37,14 @@ __kernel_size_t __clear_user_hexagon(void __user *dest, unsigned long count)
 	long uncleared;
 
 	while (count > PAGE_SIZE) {
-		uncleared = __copy_to_user_hexagon(dest, &empty_zero_page,
-						PAGE_SIZE);
+		uncleared = raw_copy_to_user(dest, &empty_zero_page, PAGE_SIZE);
 		if (uncleared)
 			return count - (PAGE_SIZE - uncleared);
 		count -= PAGE_SIZE;
 		dest += PAGE_SIZE;
 	}
 	if (count)
-		count = __copy_to_user_hexagon(dest, &empty_zero_page, count);
+		count = raw_copy_to_user(dest, &empty_zero_page, count);
 
 	return count;
 }