[MIPS] Replace board_timer_setup function pointer by plat_timer_setup.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

---
diff --git a/arch/mips/ite-boards/generic/it8172_setup.c b/arch/mips/ite-boards/generic/it8172_setup.c
index 0c657b4..07faf3c 100644
--- a/arch/mips/ite-boards/generic/it8172_setup.c
+++ b/arch/mips/ite-boards/generic/it8172_setup.c
@@ -60,7 +60,6 @@
 extern void it8172_power_off(void);
 
 extern void it8172_time_init(void);
-extern void it8172_timer_setup(struct irqaction *irq);
 
 #ifdef CONFIG_IT8172_REVC
 struct {
@@ -168,7 +167,6 @@
 	clear_c0_status(ST0_FR);
 
 	board_time_init = it8172_time_init;
-	board_timer_setup = it8172_timer_setup;
 
 	_machine_restart = it8172_restart;
 	_machine_halt = it8172_halt;
diff --git a/arch/mips/ite-boards/generic/time.c b/arch/mips/ite-boards/generic/time.c
index dee497a..3dc5556 100644
--- a/arch/mips/ite-boards/generic/time.c
+++ b/arch/mips/ite-boards/generic/time.c
@@ -233,7 +233,8 @@
 }
 
 #define ALLINTS (IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5)
-void __init it8172_timer_setup(struct irqaction *irq)
+
+void __init plat_timer_setup(struct irqaction *irq)
 {
 	puts("timer_setup\n");
 	put32(NR_IRQS);