GCC4.6: Squash warnings in smsc95xx.c

smsc95xx.c: In function 'smsc95xx_write_hwaddr':
smsc95xx.c:380:2: warning: dereferencing type-punned pointer will break
strict-aliasing rules

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>

drivers/usb/eth/smsc95xx.c

diff --git a/drivers/usb/eth/smsc95xx.c b/drivers/usb/eth/smsc95xx.c
index 97f2729..7ee4f87 100644
--- a/drivers/usb/eth/smsc95xx.c
+++ b/drivers/usb/eth/smsc95xx.c
@@ -377,7 +377,7 @@
 
 	/* set hardware address */
 	debug("** %s()\n", __func__);
-	addr_lo = cpu_to_le32(*((u32 *)eth->enetaddr));
+	addr_lo = cpu_to_le32(*eth->enetaddr);
 	addr_hi = cpu_to_le16(*((u16 *)(eth->enetaddr + 4)));
 	ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
 	if (ret < 0) {