[MIPS] Remove duplicate fpu enable hazard code.

Use common code from hazards.h instead.
Signed-off-by: NChris Dearman <chris@mips.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/kernel/r4k_switch.S

@@ -174,7 +174,7 @@ LEAF(_init_fpu)
 	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

include/asm-mips/asmmacro.h

@@ -52,21 +52,6 @@
 	.endm
 #endif /* CONFIG_MIPS_MT_SMTC */
 
-#ifdef CONFIG_CPU_SB1
-	.macro	fpu_enable_hazard
-	.set	push
-	.set	noreorder
-	.set	mips2
-	SSNOP
-	bnezl	$0, .+4
-	 SSNOP
-	.set	pop
-	.endm
-#else
-	.macro	fpu_enable_hazard
-	.endm
-#endif
-
 /*
  * Temporary until all gas have MT ASE support
  */