drivers/mmcsd/mmcsd_sdio.c: fix unable to switch eMMC device to 4-bit bus width mode

All eMMC devices support 4-bit bus width, so we should mark the
device as supporting 4-bit bus width after detecting that the
device type is eMMC.

Signed-off-by: Yinzhe Wu <Yinzhe.Wu@sony.com>
Reviewed-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Jacky Cao <Jacky.Cao@sony.com>
Tested-by: Yinzhe Wu <Yinzhe.Wu@sony.com>

Author: Windrow14

drivers/mmcsd/mmcsd_sdio.c

@@ -2548,7 +2548,7 @@ static int mmcsd_widebus(FAR struct mmcsd_state_s *priv)
 
   /* Configure the SDIO peripheral */
 
-  if ((IS_MMC(priv->type) && ((priv->caps & SDIO_CAPS_1BIT_ONLY) == 0)) ||
+  if ((IS_MMC(priv->type) && ((priv->caps & SDIO_CAPS_1BIT_ONLY) == 0)) &&
       ((priv->buswidth & MMCSD_SCR_BUSWIDTH_4BIT) != 0))
     {
       /* JEDEC specs: A.8.3 Changing the data bus width: 'Bus testing
@@ -3500,6 +3500,7 @@ static int mmcsd_cardidentify(FAR struct mmcsd_state_s *priv)
 
       finfo("MMC card detected\n");
       priv->type = MMCSD_CARDTYPE_MMC;
+      priv->buswidth |= MMCSD_SCR_BUSWIDTH_4BIT;
 
       /* Now, check if this is a MMC card/chip that supports block
        * addressing