powerpc: Remove MMU_FTR_SLB

We now only support cpus that use an SLB, so we don't need an MMU
feature to indicate that.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index fb8bea7..6b7c1c8 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -828,8 +828,7 @@
 	htab_initialize();
 
 	/* Initialize SLB management */
-	if (mmu_has_feature(MMU_FTR_SLB))
-		slb_initialize();
+	slb_initialize();
 }
 
 #ifdef CONFIG_SMP
@@ -840,8 +839,7 @@
 		mtspr(SPRN_SDR1, _SDR1);
 
 	/* Initialize SLB */
-	if (mmu_has_feature(MMU_FTR_SLB))
-		slb_initialize();
+	slb_initialize();
 }
 #endif /* CONFIG_SMP */