mmc: CMD7:MMC_CMD_SELECT_CARD response fix

As per JEDEC document JESD84-A441 (page 105) response for CMD7
(MMC_CMD_SELECT_CARD) response should be R1 instead of R1b. In uboot we
never take MMC to disconnected state and on powerup its always ideal
state which later goes to stand-by state.

from document footnote:
R1 while selecting from Stand-By State to Transfer State; R1b while
selecting from Disconnected State to Programming State.
Signed-off-by: NAjay Bhargav <ajay.bhargav@einfochips.com>

drivers/mmc/mmc.c

@@ -988,7 +988,7 @@ int mmc_startup(struct mmc *mmc)
 	/* Select the card, and put it into Transfer Mode */
 	if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
 		cmd.cmdidx = MMC_CMD_SELECT_CARD;
-		cmd.resp_type = MMC_RSP_R1b;
+		cmd.resp_type = MMC_RSP_R1;
 		cmd.cmdarg = mmc->rca << 16;
 		cmd.flags = 0;
 		err = mmc_send_cmd(mmc, &cmd, NULL);