treewide: Migrate CONFIG_FSL_ESDHC to Kconfig

Migrate the CONFIG_FSL_ESDHC option to Kconfig.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/configs/gwventana_emmc_defconfig b/configs/gwventana_emmc_defconfig
index fe92c4b..c77de88 100644
--- a/configs/gwventana_emmc_defconfig
+++ b/configs/gwventana_emmc_defconfig
@@ -56,6 +56,7 @@
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_DM=y
 CONFIG_DWC_AHSATA=y
+CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_NETDEVICES=y
 CONFIG_E1000=y