sdm660-common: rootdir: Put tftp in a group
Fixes following spamfest:
09-09 06:49:00.304 823 823 I tftp_server: pid=823 tid=823
tftp-server : INF :[tftp_server.c, 667] rcvd >
09-09 06:49:00.304 823 12138 I tftp_server: pid=823 tid=12138
tftp-server : INF :[tftp_server_utils.c, 11>
09-09 06:49:00.304 823 12138 I tftp_server: pid=823 tid=12138
tftp-server : INF :[tftp_server.c, 1222] OA>
09-09 06:49:00.304 823 12138 E tftp_server: pid=823 tid=12138
tftp-server : ERR :[tftp_os_la.c, 191] unli>
09-09 06:49:00.305 823 12138 I tftp_server: pid=823 tid=12138
tftp-server : INF :[tftp_server.c, 893] Usi>
09-09 06:49:00.305 823 12138 I tftp_server: pid=823 tid=12138
tftp-server : INF :[tftp_os_la.c, 63] open >
09-09 06:49:00.305 823 12138 E tftp_server: pid=823 tid=12138
tftp-server : ERR :[tftp_os_la.c, 70] open >
09-09 06:49:00.305 823 12138 I tftp_server: pid=823 tid=12138
tftp-server : INF :[tftp_server.c, 927] ope>
09-09 06:49:00.305 823 12138 E tftp_server: pid=823 tid=12138
tftp-server : ERR :[tftp_server.c, 1718] op>
09-09 06:49:00.305 823 12138 E tftp_server: pid=823 tid=12138
tftp-server : ERR :[tftp_protocol.c, 1229] >
Change-Id: I60fcc9530a69326bb3fc92beed1cdb4221d6ddd9
Signed-off-by: pix106 <sbordenave@gmail.com>