mmc: omap_hsmmc: update mmc->clock with the actual bus speed

When the clock is applied, compute the actual value of the clock. It may be
slightly different from the requested value (max freq, divisor threshold)

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

drivers/mmc/omap_hsmmc.c

@@ -1147,7 +1147,8 @@ static void omap_hsmmc_set_clock(struct mmc *mmc)
 		}
 	}
 
-	priv->clock = mmc->clock;
+	priv->clock = MMC_CLOCK_REFERENCE * 1000000 / dsor;
+	mmc->clock = priv->clock;
 	omap_hsmmc_start_clock(mmc_base);
 }