ARC: [axs10x] fix SD cards support (STAR 9000799830)

As DW Mobile Storage databook says it's required to use "Hold Register"
if card is enumerated in SDR12 or SDR25 modes.

It means we need to act in the same was as in Rockchip and Socfpga
implementations - set "use hold reg" bit in commad.

Note that for upstream proper solution would be to remove
dw_mci_pltfm_prepare_command() at all and set the bit right in
dw_mci_prepare_command() for all platforms.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Author: abrodkin

drivers/mmc/host/dw_mmc-pltfm.c

@@ -89,7 +89,8 @@ SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume)
 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
 
 static const struct of_device_id dw_mci_pltfm_match[] = {
-	{ .compatible = "snps,dw-mshc", },
+	{ .compatible = "snps,dw-mshc",
+		.data = &rockchip_drv_data },
 	{ .compatible = "rockchip,rk2928-dw-mshc",
 		.data = &rockchip_drv_data },
 	{},