[POWERPC] Minor comment fix for misc_64.S

A minor comment fix for misc_64.S from Takao Shinohara.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index bfb407f..e3ed21c 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -687,7 +687,7 @@
 	/* clear out hardware hash page table and tlb */
 	ld	r5,0(r27)		/* deref function descriptor */
 	mtctr	r5
-	bctrl				/* ppc_md.hash_clear_all(void); */
+	bctrl				/* ppc_md.hpte_clear_all(void); */
 
 /*
  *   kexec image calling is: