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/mx53cx9020_defconfig b/configs/mx53cx9020_defconfig
index c2e9411..351b8cd 100644
--- a/configs/mx53cx9020_defconfig
+++ b/configs/mx53cx9020_defconfig
@@ -23,6 +23,7 @@
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_FPGA_ALTERA=y
 CONFIG_FPGA_CYCLON2=y
+CONFIG_FSL_ESDHC=y
 CONFIG_NETDEVICES=y
 CONFIG_FEC_MXC=y
 CONFIG_PINCTRL=y