mmc: dw_mmc: change the macro name from DTO to DRTO

At Interrupt status register, Bit9 is Data Read Timeout.
But we used macro name as the DTO. It could be confused with the
Data Transfer Over(DTO)-Bit[3].
It's clearly that is changed the DRTO instead of DTO.
Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: NJames Hogan <james.hogan@imgtec.com>
Acked-by: NSeungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/dw_mmc.c

@@ -39,7 +39,7 @@
 #include "dw_mmc.h"
 
 /* Common flag combinations */
-#define DW_MCI_DATA_ERROR_FLAGS	(SDMMC_INT_DTO | SDMMC_INT_DCRC | \
+#define DW_MCI_DATA_ERROR_FLAGS	(SDMMC_INT_DRTO | SDMMC_INT_DCRC | \
 				 SDMMC_INT_HTO | SDMMC_INT_SBE  | \
 				 SDMMC_INT_EBE)
 #define DW_MCI_CMD_ERROR_FLAGS	(SDMMC_INT_RTO | SDMMC_INT_RCRC | \
@@ -1093,7 +1093,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
 			status = host->data_status;
 
 			if (status & DW_MCI_DATA_ERROR_FLAGS) {
-				if (status & SDMMC_INT_DTO) {
+				if (status & SDMMC_INT_DRTO) {
 					data->error = -ETIMEDOUT;
 				} else if (status & SDMMC_INT_DCRC) {
 					data->error = -EILSEQ;

drivers/mmc/host/dw_mmc.h

@@ -98,7 +98,7 @@
 #define SDMMC_INT_HLE			BIT(12)
 #define SDMMC_INT_FRUN			BIT(11)
 #define SDMMC_INT_HTO			BIT(10)
-#define SDMMC_INT_DTO			BIT(9)
+#define SDMMC_INT_DRTO			BIT(9)
 #define SDMMC_INT_RTO			BIT(8)
 #define SDMMC_INT_DCRC			BIT(7)
 #define SDMMC_INT_RCRC			BIT(6)