[MIPS] Remove duplicate fpu enable hazard code.

Use common code from hazards.h instead.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S
index cc566cf..0672959 100644
--- a/arch/mips/kernel/r4k_switch.S
+++ b/arch/mips/kernel/r4k_switch.S
@@ -174,7 +174,7 @@
 	or	t0, t1
 	mtc0	t0, CP0_STATUS
 #endif /* CONFIG_MIPS_MT_SMTC */
-	fpu_enable_hazard
+	enable_fpu_hazard
 
 	li	t1, FPU_DEFAULT
 	ctc1	t1, fcr31