[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/gt64120/wrppmc/setup.c b/arch/mips/gt64120/wrppmc/setup.c
index 221d808..429afc4 100644
--- a/arch/mips/gt64120/wrppmc/setup.c
+++ b/arch/mips/gt64120/wrppmc/setup.c
@@ -127,7 +127,6 @@
 void __init plat_mem_setup(void)
 {
 	extern void wrppmc_time_init(void);
-	extern void wrppmc_timer_setup(struct irqaction *);
 	extern void wrppmc_machine_restart(char *command);
 	extern void wrppmc_machine_halt(void);
 	extern void wrppmc_machine_power_off(void);
@@ -138,7 +137,6 @@
 
 	/* Use MIPS Count/Compare Timer */
 	board_time_init   = wrppmc_time_init;
-	board_timer_setup = wrppmc_timer_setup;
 
 	/* This makes the operations of 'in/out[bwl]' to the
 	 * physical address ( < KSEG0) can work via KSEG1
diff --git a/arch/mips/gt64120/wrppmc/time.c b/arch/mips/gt64120/wrppmc/time.c
index c8ed57e..5b44085 100644
--- a/arch/mips/gt64120/wrppmc/time.c
+++ b/arch/mips/gt64120/wrppmc/time.c
@@ -26,7 +26,7 @@
 
 #define WRPPMC_CPU_CLK_FREQ 40000000 /* 40MHZ */
 
-void __init wrppmc_timer_setup(struct irqaction *irq)
+void __init plat_timer_setup(struct irqaction *irq)
 {
 	/* Install ISR for timer interrupt */
 	setup_irq(WRPPMC_MIPS_TIMER_IRQ, irq);