hrtimer: Rearrange comments in the order struct members are declared

Rearrange kernel doc comments in the order members of struct hrtimer are
declared.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linaro-kernel@lists.linaro.org
Cc: fweisbec@gmail.com
Cc: trivial@kernel.org
Link: http://lkml.kernel.org/r/1db1a3cfbe8a9ea49396af75c6ac04a2e67e3ab0.1395226248.git.viresh.kumar@linaro.orgSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

include/linux/hrtimer.h

@@ -96,12 +96,12 @@ enum hrtimer_restart {
  * @function:	timer expiry callback function
  * @base:	pointer to the timer base (per cpu and per clock)
  * @state:	state information (See bit values above)
+ * @start_pid: timer statistics field to store the pid of the task which
+ *		started the timer
  * @start_site:	timer statistics field to store the site where the timer
  *		was started
  * @start_comm: timer statistics field to store the name of the process which
  *		started the timer
- * @start_pid: timer statistics field to store the pid of the task which
- *		started the timer
  *
  * The hrtimer structure must be initialized by hrtimer_init()
  */