fs: Add model field to geometry and mtd_geometry_s

the model is very to track the device info

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

drivers/mtd/ftl.c

@@ -478,6 +478,8 @@ static int ftl_geometry(FAR struct inode *inode,
       geometry->geo_nsectors      = dev->geo.neraseblocks * dev->blkper;
       geometry->geo_sectorsize    = dev->geo.blocksize;
 
+      strcpy(geometry->geo_model, dev->geo.model);
+
       finfo("available: true mediachanged: false writeenabled: %s\n",
             geometry->geo_writeenabled ? "true" : "false");
       finfo("nsectors: %" PRIuOFF " sectorsize: %u\n",

include/nuttx/fs/fs.h

@@ -222,6 +222,10 @@ struct geometry
   bool      geo_writeenabled; /* true: It is okay to write to this device */
   blkcnt_t  geo_nsectors;     /* Number of sectors on the device */
   blksize_t geo_sectorsize;   /* Size of one sector */
+
+  /* NULL-terminated string representing the device model */
+
+  char      geo_model[NAME_MAX + 1];
 };
 
 struct partition_info_s

include/nuttx/mtd/mtd.h

@@ -110,6 +110,10 @@ struct mtd_geometry_s
   uint32_t erasesize;     /* Size of one erase blocks -- must be a multiple
                            * of blocksize. */
   uint32_t neraseblocks;  /* Number of erase blocks */
+
+  /* NULL-terminated string representing the device model */
+
+  char     model[NAME_MAX + 1];
 };
 
 /* This structure describes a range of sectors to be protected or