[DM][MTD] Set MTD config to menuconfig

Signed-off-by: GuEe-GUI <2991707448@qq.com>

components/drivers/mtd/Kconfig

@@ -1,4 +1,4 @@
-config RT_USING_MTD_NOR
+menuconfig RT_USING_MTD_NOR
     bool "Using MTD Nor Flash device drivers"
     default n