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/ge_b450v3_defconfig b/configs/ge_b450v3_defconfig
index a2ba498..6f7424a 100644
--- a/configs/ge_b450v3_defconfig
+++ b/configs/ge_b450v3_defconfig
@@ -31,6 +31,7 @@
 CONFIG_BOOTCOUNT_EXT=y
 CONFIG_SYS_BOOTCOUNT_EXT_DEVPART="1:5"
 CONFIG_SYS_BOOTCOUNT_ADDR=0x7000A000
+CONFIG_FSL_ESDHC=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_NETDEVICES=y