Document the hack to compile sys/arch/powerpc/oea/pmap.c with

-Wno-cast-qual.

doc/HACKS

@@ -1,4 +1,4 @@
-# $NetBSD: HACKS,v 1.48 2005/05/26 18:33:36 he Exp $
+# $NetBSD: HACKS,v 1.49 2005/06/02 10:25:22 he Exp $
 #
 # This file is intended to document workarounds for currently unsolved
 # (mostly) compiler bugs.
@@ -474,3 +474,19 @@ port	hppa
 		For now, we'll add some padding to scsipi_xfer so that
 		the corrupted memory is not otherwise used.
 	kcah
+
+port	powerpc
+
+	hack	add -Wno-cast-qual to pmap.c
+	cdate	Thu Jun  2 12:18:53 CEST 2005
+	who	he
+	file	sys/arch/powerpc/conf/Makefile.powerpc : 1.34
+	file	sys/arch/powerpc/conf/files.powerpc : 1.59
+	descr
+		sys/arch/powerpc/oea/pmap.c cannot be compiled with
+		-Wcast-qual because "volatile struct pteg *pmap_pteg_table"
+		is being passed to memset(), and the only obvious
+		alternative to adding -Wno-cast-qual I could see would
+		be to open-code memset(), which I think would be worse
+		than this fix.
+	kcah