[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/basler/excite/excite_setup.c b/arch/mips/basler/excite/excite_setup.c
index e1d6ad2..a1ce458 100644
--- a/arch/mips/basler/excite/excite_setup.c
+++ b/arch/mips/basler/excite/excite_setup.c
@@ -78,7 +78,7 @@
 	mips_hpt_frequency = EXCITE_CPU_EXT_CLOCK * mult / div / 2;
 }
 
-static void excite_timer_setup(struct irqaction *irq)
+void __init plat_timer_setup(struct irqaction *irq)
 {
 	/* The eXcite platform uses the alternate timer interrupt */
 	set_c0_intcontrol(0x80);
@@ -262,7 +262,6 @@
 
 	/* Set up timer initialization hooks */
 	board_time_init = excite_timer_init;
-	board_timer_setup = excite_timer_setup;
 
 	/* Set up the peripheral address map */
 	*(boot_ocd_base + (LKB9 / sizeof (u32))) = 0;