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/P1020RDB-PC_36BIT_defconfig b/configs/P1020RDB-PC_36BIT_defconfig
index d6a32df..c46ff0e 100644
--- a/configs/P1020RDB-PC_36BIT_defconfig
+++ b/configs/P1020RDB-PC_36BIT_defconfig
@@ -25,6 +25,7 @@
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
 CONFIG_ENV_IS_IN_FLASH=y
+CONFIG_FSL_ESDHC=y
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y