Bump buildroot to version 2017-02

TG-3 #closed

bsp/buildroot/package/mariadb/mysqld.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=MySQL database server
+
+[Service]
+ExecStartPre=/bin/sh -c 'test "`ls -1 /var/lib/mysql | wc -l`" != "0" || mysql_install_db --basedir=/usr --datadir=/var/lib/mysql'
+ExecStart=/usr/bin/mysqld_safe
+Restart=always
+User=mysql
+RuntimeDirectory=mysql
+RuntimeDirectoryMode=0755
+
+[Install]
+WantedBy=multi-user.target