mysql: fix missing directory

Signed-off-by: Marcelo Gutiérrez <kuyurix@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mysql/mysql.mk

@@ -50,6 +50,7 @@ HOST_MYSQL_CONF_OPT = \
 	--disable-mysql-maintainer-mode
 
 MYSQL_CONF_OPT += \
+	--localstatedir=/var/mysql \
 	--disable-dependency-tracking \
 	--with-atomic-ops=up \
 	--with-embedded-server \
@@ -88,6 +89,12 @@ define HOST_MYSQL_INSTALL_CMDS
 	$(INSTALL) -m 0755  $(@D)/sql/gen_lex_hash  $(HOST_DIR)/usr/bin/
 endef
 
+define MYSQL_ADD_FOLDER
+	$(INSTALL) -d $(TARGET_DIR)/var/mysql
+endef
+
+MYSQL_POST_INSTALL_TARGET_HOOKS += MYSQL_ADD_FOLDER
+
 else
 MYSQL_CONF_OPT += \
 	--without-server