src: Use #include <timer.h> when appropriate

Also, extra-lines added or removed and local includes moved down.

Change-Id: I5e739233f3742fd68d537f671642bb04886e3009
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32009
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/skylake/pmutil.c

@@ -37,8 +37,8 @@
 #include <soc/pm.h>
 #include <soc/pmc.h>
 #include <soc/smbus.h>
-#include <timer.h>
 #include <security/vboot/vbnv.h>
+
 #include "chip.h"
 
 /*