tree-wide: sort includes

Sort the includes accoding to the new coding style.

src/bootchart/svg.c

@@ -22,25 +22,25 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  ***/
 
+#include <fcntl.h>
+#include <limits.h>
 #include <stdio.h>
 #include <string.h>
-#include <time.h>
-#include <limits.h>
-#include <unistd.h>
 #include <sys/utsname.h>
-#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
 
 #include "alloc-util.h"
 #include "architecture.h"
-#include "util.h"
+#include "bootchart.h"
+#include "fd-util.h"
 #include "fileio.h"
+#include "list.h"
 #include "macro.h"
 #include "store.h"
 #include "svg.h"
-#include "bootchart.h"
-#include "list.h"
 #include "utf8.h"
-#include "fd-util.h"
+#include "util.h"
 
 #define time_to_graph(t) ((t) * arg_scale_x)
 #define ps_to_graph(n) ((n) * arg_scale_y)