mmc: dw_mmc: Replace fifoth_val property with fifo-depth

Replace fifoth_val property with its fifo-depth counterpart in all DW
MMC drivers. fifo-depth is a common property used in upstream Linux
kernel. The FIFOTH register value will be calculated using fifo-depth
value in DW MMC core (dw_mmc.c). This change reduces code duplication in
platform drivers, and pulls common FIFOTH register value calculation
into core dw_mmc driver where it belongs.

No functional change.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/mmc/nexell_dw_mmc.c b/drivers/mmc/nexell_dw_mmc.c
index 2e1ce54..80df617 100644
--- a/drivers/mmc/nexell_dw_mmc.c
+++ b/drivers/mmc/nexell_dw_mmc.c
@@ -186,10 +186,7 @@
 	struct dwmci_host *host = &priv->host;
 	struct udevice *pwr_dev __maybe_unused;
 
-	host->fifoth_val = MSIZE(0x2) |
-		RX_WMARK(priv->fifo_size / 2 - 1) |
-		TX_WMARK(priv->fifo_size / 2);
-
+	host->fifo_depth = priv->fifo_size;
 	host->fifo_mode = priv->fifo_mode;
 
 	dwmci_setup_cfg(&plat->cfg, host, priv->max_freq, priv->min_freq);