fs: Use new numeric setenv functions

Use setenv_ulong(), setenv_hex() and setenv_addr() in fs/

Signed-off-by: Simon Glass <sjg@chromium.org>

fs/ubifs/ubifs.c

@@ -687,7 +687,6 @@ int ubifs_load(char *filename, u32 addr, u32 size)
 	int i;
 	int count;
 	int last_block_size = 0;
-	char buf [10];
 
 	c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
 	/* ubifs_findfile will resolve symlinks, so we know that we get
@@ -740,8 +739,7 @@ int ubifs_load(char *filename, u32 addr, u32 size)
 	if (err)
 		printf("Error reading file '%s'\n", filename);
 	else {
-	        sprintf(buf, "%X", size);
-		setenv("filesize", buf);
+		setenv_hex("filesize", size);
 		printf("Done\n");
 	}