igb: Fix sparse warning about passing __beXX into leXX_to_cpup

We were casting the addr as __beXX and then passing it into le32_to_cpu
because the device expects the MAC address to be in network order even
though the register set is little endian.  Instead of casting it as __beXX
we can just cast it as __leXX in order to maintain consistency since the
region of memory is already in little endian order as far as we are
concerned.
Signed-off-by: NAlexander Duyck <aduyck@mirantis.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/igb/igb_main.c

@@ -7845,11 +7845,13 @@ static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index,
 	struct e1000_hw *hw = &adapter->hw;
 	u32 rar_low, rar_high;
 
-	/* HW expects these in little endian so we reverse the byte order
-	 * from network order (big endian) to CPU endian
+	/* HW expects these to be in network order when they are plugged
+	 * into the registers which are little endian.  In order to guarantee
+	 * that ordering we need to do an leXX_to_cpup here in order to be
+	 * ready for the byteswap that occurs with writel
 	 */
-	rar_low = le32_to_cpup((__be32 *)(addr));
-	rar_high = le16_to_cpup((__be16 *)(addr + 4));
+	rar_low = le32_to_cpup((__le32 *)(addr));
+	rar_high = le16_to_cpup((__le16 *)(addr + 4));
 
 	/* Indicate to hardware the Address is Valid. */
 	rar_high |= E1000_RAH_AV;