bnx2x: Casting page alignment

Adding a proper cast to the argument of PAGE_ALIGN macro so that the output
won't depend on its original type. Without this cast aligned value will be
truncated to the size of the argument type.
Reported-by: NBjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: NVladislav Zolotarov <vladz@broadcom.com>
Tested-by: NBjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/bnx2x.h

@@ -152,7 +152,7 @@ struct sw_rx_page {
 #define PAGES_PER_SGE			(1 << PAGES_PER_SGE_SHIFT)
 #define SGE_PAGE_SIZE			PAGE_SIZE
 #define SGE_PAGE_SHIFT			PAGE_SHIFT
-#define SGE_PAGE_ALIGN(addr)		PAGE_ALIGN(addr)
+#define SGE_PAGE_ALIGN(addr)		PAGE_ALIGN((typeof(PAGE_SIZE))addr)
 
 #define BCM_RX_ETH_PAYLOAD_ALIGN	64