MMC S5P: Fix typo

Fix typo resulting in the compilation error

s5p_mmc.c: In function 's5p_mmc_initialize':
s5p_mmc.c:469: error: 'struct mmc' has no member named 'm_bmax'

introduced by commit "MMC: make b_max unconditional"
(8feafcc49c0b7a9c541904f95a43dbef2fecc38b)

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
CC: John Rigby <john.rigby@linaro.org>
CC: Andy Fleming <afleming@freescale.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

drivers/mmc/s5p_mmc.c

@@ -466,7 +466,7 @@ static int s5p_mmc_initialize(int dev_index, int bus_width)
 
 	mmc_host[dev_index].clock = 0;
 	mmc_host[dev_index].reg = s5p_get_base_mmc(dev_index);
-	mmc->m_bmax = 0;
+	mmc->b_max = 0;
 	mmc_register(mmc);
 
 	return 0;