meta-asrock: e3c246d4i: Enable MMC/SDHCI reset quirk

It seems e3c246d4i suffers from the same missing pull-up on the reset
line that also affects e3c256d4i, so enable the quirk override to
disable MMC/SDHCI driver support in u-boot as a workaround.

Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Change-Id: I411f3857110f6c7e9fefccfb330742daf417138c
diff --git a/meta-asrock/meta-e3c246d4i/conf/machine/e3c246d4i.conf b/meta-asrock/meta-e3c246d4i/conf/machine/e3c246d4i.conf
index 0a67e78..ab8b740 100644
--- a/meta-asrock/meta-e3c246d4i/conf/machine/e3c246d4i.conf
+++ b/meta-asrock/meta-e3c246d4i/conf/machine/e3c246d4i.conf
@@ -17,3 +17,5 @@
 
 VIRTUAL-RUNTIME_obmc-inventory-manager = "entity-manager"
 VIRTUAL-RUNTIME_obmc-sensors-hwmon = "dbus-sensors"
+
+MACHINEOVERRIDES =. "asrock-mmc-sdhci-reset-quirk:"