meta-asrock: Generalize MMC/SDHCI reset quirk
As it turns out, e3c256d4i isn't the only board with this problem,
so move the u-boot config fragment to meta-common and make it available
via an override.
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Change-Id: I7182a6a1dd12603fec1d0633edc60d018285914f
diff --git a/meta-asrock/meta-common/recipes-bsp/u-boot/files/disable-mmc-sdhci.cfg b/meta-asrock/meta-common/recipes-bsp/u-boot/files/disable-mmc-sdhci.cfg
new file mode 100644
index 0000000..83f2a31
--- /dev/null
+++ b/meta-asrock/meta-common/recipes-bsp/u-boot/files/disable-mmc-sdhci.cfg
@@ -0,0 +1,5 @@
+# Needed as a bug workaround -- due to (apparently) a missing pull-up resistor
+# on the reset lines of some ASRock boards, u-boot switching the pinctrl when
+# it binds its mmc driver blips the line and resets the host; disabling the
+# driver (which isn't needed on those platforms) prevents that.
+CONFIG_MMC_SDHCI_ASPEED=n