clocksource/drivers/davinci: Move pr_fmt() before the includes

We no longer need to undef pr_fmt if we define our own before including
any headers.

Signed-off-by: Bartosz Golaszewski <[e-mail]>
Acked-by: David Lechner <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/clocksource/timer-davinci.c

···
  * (with tiny parts adopted from code by Kevin Hilman <[e-mail]>)
  */
 
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
 #include <linux/clk.h>
 #include <linux/clockchips.h>
 #include <linux/interrupt.h>
···
 #include <linux/sched_clock.h>
 
 #include <clocksource/timer-davinci.h>
-
-#undef pr_fmt
-#define pr_fmt(fmt) "%s: " fmt, __func__
 
 #define DAVINCI_TIMER_REG_TIM12			0x10
 #define DAVINCI_TIMER_REG_TIM34			0x14