bnx2x: fix MaxBW configuration

Increase resolution of MaxBW algorithm to suit
Min Bandwidth configuration.
Signed-off-by: NDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/bnx2x/bnx2x.h

@@ -1617,8 +1617,8 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
 /* CMNG constants, as derived from system spec calculations */
 /* default MIN rate in case VNIC min rate is configured to zero - 100Mbps */
 #define DEF_MIN_RATE					100
-/* resolution of the rate shaping timer - 100 usec */
-#define RS_PERIODIC_TIMEOUT_USEC			100
+/* resolution of the rate shaping timer - 400 usec */
+#define RS_PERIODIC_TIMEOUT_USEC			400
 /* number of bytes in single QM arbitration cycle -
  * coefficient for calculating the fairness timer */
 #define QM_ARB_BYTES					160000