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/lib/thread.c

@@ -12,6 +12,7 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  */
+
 #include <stddef.h>
 #include <stdint.h>
 #include <stdlib.h>
@@ -19,6 +20,7 @@
 #include <bootstate.h>
 #include <console/console.h>
 #include <thread.h>
+#include <timer.h>
 
 static void idle_thread_init(void);