Convert CONFIG_SYS_NAND_ONFI_DETECTION to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_NAND_ONFI_DETECTION

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/colibri_vf_defconfig b/configs/colibri_vf_defconfig
index 3fb13ea..db105cb 100644
--- a/configs/colibri_vf_defconfig
+++ b/configs/colibri_vf_defconfig
@@ -73,6 +73,7 @@
 CONFIG_NAND_VF610_NFC=y
 CONFIG_NAND_VF610_NFC_DT=y
 CONFIG_SYS_NAND_VF610_NFC_60_ECC_BYTES=y
+CONFIG_SYS_NAND_ONFI_DETECTION=y
 CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y