[BUGFIX][T108][bug-view-1766] Fix the bug that ftp cannot log in

Only Configure: No
Affected branch: GSW_V1453
Affected module: ftp
Is it affected on IC: only ASR
Self-test: yes
Doc Update: no

Change-Id: I8d5c487093f0e07654e21bc6107ae5d7aeddbd9e
diff --git a/target/linux/mmp/base-files/etc/group b/target/linux/mmp/base-files/etc/group
index 02a94c6..1d9adcc 100755
--- a/target/linux/mmp/base-files/etc/group
+++ b/target/linux/mmp/base-files/etc/group
@@ -1,2 +1,4 @@
 root:x:0:
 mbtk:x:1000:
+ftp:x:1001:
+nobody:x:65534: