ibm_newemac: Correct opb_bus_freq value

The EMAC4_MR1_OBCI(freq) macro expects freg in MHz,
while opb_bus_freq is kept in Hz. Correct this.
Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/ibm_newemac/core.c

@@ -402,7 +402,7 @@ static u32 __emac_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_s
 static u32 __emac4_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_size)
 {
 	u32 ret = EMAC_MR1_VLE | EMAC_MR1_IST | EMAC4_MR1_TR |
-		EMAC4_MR1_OBCI(dev->opb_bus_freq);
+		EMAC4_MR1_OBCI(dev->opb_bus_freq / 1000000);
 
 	DBG2(dev, "__emac4_calc_base_mr1" NL);