initial buildroot for linux 5.15

package/mariadb/mysqld.service

@@ -0,0 +1,14 @@
+[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 && chown -R mysql:mysql /var/lib/mysql'
+ExecStartPre=install -d -o mysql -g root -m 0755 /var/log/mysql
+ExecStart=/usr/bin/mysqld_safe --log-error=/var/log/mysql/mysqld.log
+Restart=always
+User=mysql
+RuntimeDirectory=mysql
+RuntimeDirectoryMode=0755
+
+[Install]
+WantedBy=multi-user.target