[build] Fix dubious uses of bitwise operators

Detected by sparse.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/net/rtl818x/rtl8185_rtl8225.c

 	udelay(10);
 
 	for (i = 15; i >= 0; i--) {
-		u16 reg = reg80 | !!(bangdata & (1 << i));
+		u16 reg = ( reg80 | ( ( bangdata >> i ) & 1 ) );
 
 		if (i & 1)
 			rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg);

src/net/fcoe.c

 	/* Increment the timeout counter */
 	fcoe->timeouts++;
 
-	if ( vlan_can_be_trunk ( fcoe->netdev ) &
+	if ( vlan_can_be_trunk ( fcoe->netdev ) &&
 	     ! ( fcoe->flags & FCOE_VLAN_TIMED_OUT ) ) {
 
 		/* If we have already found a VLAN, send infrequent