common: Move get_tbclk() to time.h

This function related to timer and most of the timer functions are in
time.h, so move this function there.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index 1855662..9f9eed1 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -12,6 +12,7 @@
 #include <common.h>
 #include <cpu_func.h>
 #include <irq_func.h>
+#include <time.h>
 #include <vsprintf.h>
 #include <watchdog.h>
 #include <command.h>
@@ -332,7 +333,7 @@
 #ifndef CONFIG_SYS_FSL_TBCLK_DIV
 #define CONFIG_SYS_FSL_TBCLK_DIV 8
 #endif
-__weak unsigned long get_tbclk (void)
+__weak unsigned long get_tbclk(void)
 {
 	unsigned long tbclk_div = CONFIG_SYS_FSL_TBCLK_DIV;
 
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c
index 4c3693e..65f909f 100644
--- a/arch/powerpc/cpu/mpc85xx/fdt.c
+++ b/arch/powerpc/cpu/mpc85xx/fdt.c
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <clock_legacy.h>
 #include <env.h>
+#include <time.h>
 #include <linux/libfdt.h>
 #include <fdt_support.h>
 #include <asm/processor.h>
diff --git a/arch/powerpc/cpu/mpc85xx/interrupts.c b/arch/powerpc/cpu/mpc85xx/interrupts.c
index e767573..6f539d2 100644
--- a/arch/powerpc/cpu/mpc85xx/interrupts.c
+++ b/arch/powerpc/cpu/mpc85xx/interrupts.c
@@ -12,6 +12,7 @@
 
 #include <common.h>
 #include <irq_func.h>
+#include <time.h>
 #include <watchdog.h>
 #include <command.h>
 #include <asm/processor.h>