[PATCH] s2io build fix

Damir Perisa <[e-mail]> reports:

drivers/net/s2io.h:765: error: invalid lvalue in assignment
drivers/net/s2io.h:766: error: invalid lvalue in assignment

That's a gcc4 error. I don't see why the casts are there anyway..

Cc: Jeff Garzik <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Jeff Garzik <[e-mail]>

drivers/net/s2io.h

···
 {
 	u64 ret = 0;
 	ret = readl(addr + 4);
-	(u64) ret <<= 32;
-	(u64) ret |= readl(addr);
+	ret <<= 32;
+	ret |= readl(addr);
 
 	return ret;
 }