mmc: sdhci-of-dwcmshc: set MMC_CAP_WAIT_WHILE_BUSY

The host supports HW busy detection of the device busy signaling over
dat0 line. Set MMC_CAP_wAIT_WHILE_BUSY host capability.

Signed-off-by: Jisheng Zhang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/host/sdhci-of-dwcmshc.c

···
 			goto err_clk;
 	}
 
+	host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
+
 	err = sdhci_add_host(host);
 	if (err)
 		goto err_clk;