char: moxa.c sparse annotation

The only use is to pass this to le16_to_cpu, declare as such
drivers/char/moxa.c:548:11: warning: cast to restricted __le16.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 5df4003..12d327a 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -513,7 +513,7 @@
 		size_t len)
 {
 	void __iomem *baseAddr = brd->basemem;
-	const u16 *uptr = ptr;
+	const __le16 *uptr = ptr;
 	size_t wlen, len2, j;
 	unsigned long key, loadbuf, loadlen, checksum, checksum_ok;
 	unsigned int i, retry;