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/P1022DS_36BIT_defconfig b/configs/P1022DS_36BIT_defconfig
index 60dc6ee..fd4bbae 100644
--- a/configs/P1022DS_36BIT_defconfig
+++ b/configs/P1022DS_36BIT_defconfig
@@ -28,6 +28,7 @@
 CONFIG_MTDIDS_DEFAULT="nor0=fe8000000.nor"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=fe8000000.nor:48m(ramdisk),14m(diagnostic),2m(dink),6m(kernel),58112k(fs),512k(dtb),768k(u-boot)"
 CONFIG_ENV_IS_IN_FLASH=y
+CONFIG_FSL_ESDHC=y
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y