mmc: core: correct taac parameter according to the specification

Per the spec of JESD84-B51, section 7.3, replace tacc with taac to
fix the obvious typo.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 2bae69e..a65f56b 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -41,11 +41,11 @@ static const unsigned char tran_mant[] = {
 	35,	40,	45,	50,	55,	60,	70,	80,
 };
 
-static const unsigned int tacc_exp[] = {
+static const unsigned int taac_exp[] = {
 	1,	10,	100,	1000,	10000,	100000,	1000000, 10000000,
 };
 
-static const unsigned int tacc_mant[] = {
+static const unsigned int taac_mant[] = {
 	0,	10,	12,	13,	15,	20,	25,	30,
 	35,	40,	45,	50,	55,	60,	70,	80,
 };
@@ -153,8 +153,8 @@ static int mmc_decode_csd(struct mmc_card *card)
 	csd->mmca_vsn	 = UNSTUFF_BITS(resp, 122, 4);
 	m = UNSTUFF_BITS(resp, 115, 4);
 	e = UNSTUFF_BITS(resp, 112, 3);
-	csd->tacc_ns	 = (tacc_exp[e] * tacc_mant[m] + 9) / 10;
-	csd->tacc_clks	 = UNSTUFF_BITS(resp, 104, 8) * 100;
+	csd->taac_ns	 = (taac_exp[e] * taac_mant[m] + 9) / 10;
+	csd->taac_clks	 = UNSTUFF_BITS(resp, 104, 8) * 100;
 
 	m = UNSTUFF_BITS(resp, 99, 4);
 	e = UNSTUFF_BITS(resp, 96, 3);