nginx: group the external modules enabling logic

This commit moves the logic that allows to enable the naxsi external
module below the "external modules" comment, which was already used for
the upload and dav-ext modules.

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

package/nginx/nginx.mk

@@ -156,11 +156,6 @@ else
 NGINX_CONF_OPTS += --without-http_gzip_module
 endif
 
-ifeq ($(BR2_PACKAGE_NGINX_NAXSI),y)
-NGINX_DEPENDENCIES += nginx-naxsi
-NGINX_CONF_OPTS += --add-module=$(NGINX_NAXSI_DIR)/naxsi_src
-endif
-
 ifeq ($(BR2_PACKAGE_NGINX_HTTP_REWRITE_MODULE),y)
 NGINX_DEPENDENCIES += pcre
 else
@@ -250,6 +245,11 @@ NGINX_CONF_OPTS += --add-module=$(NGINX_DAV_EXT_DIR)
 NGINX_DEPENDENCIES += nginx-dav-ext
 endif
 
+ifeq ($(BR2_PACKAGE_NGINX_NAXSI),y)
+NGINX_DEPENDENCIES += nginx-naxsi
+NGINX_CONF_OPTS += --add-module=$(NGINX_NAXSI_DIR)/naxsi_src
+endif
+
 # Debug logging
 NGINX_CONF_OPTS += $(if $(BR2_PACKAGE_NGINX_DEBUG),--with-debug)