bnx2x: Missing brackets

Calculation bug due to missing brackets
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/bnx2x_main.c

@@ -2920,7 +2920,7 @@ static irqreturn_t bnx2x_msix_sp_int(int irq, void *dev_instance)
 #define ADD_64(s_hi, a_hi, s_lo, a_lo) \
 	do { \
 		s_lo += a_lo; \
-		s_hi += a_hi + (s_lo < a_lo) ? 1 : 0; \
+		s_hi += a_hi + ((s_lo < a_lo) ? 1 : 0); \
 	} while (0)
 
 /* difference = minuend - subtrahend */