Exclude common Kirkwood settings so they can be shared among various platforms

based on this SOC. This is a preliminary step for SheevaPlug support.

Submitted by:	Michal Hajduk
Obtained from:	Semihalf

sys/arm/mv/kirkwood/files.db88f6xxx

@@ -1,5 +1,4 @@
 # $FreeBSD$
 
-arm/mv/rtc.c			standard
-arm/mv/kirkwood/kirkwood.c	standard
+include "arm/mv/kirkwood/files.kirkwood"
 arm/mv/kirkwood/db88f6xxx.c	standard

sys/arm/mv/kirkwood/files.kirkwood

@@ -0,0 +1,4 @@
+# $FreeBSD$
+
+arm/mv/rtc.c			standard
+arm/mv/kirkwood/kirkwood.c	standard

sys/arm/mv/kirkwood/std.db88f6xxx

@@ -1,13 +1,8 @@
 # $FreeBSD$
 
 include	"../mv/std.mv"
+include "../mv/kirkwood/std.kirkwood"
 files	"../mv/kirkwood/files.db88f6xxx"
 
-makeoptions	KERNPHYSADDR=0x00900000
-makeoptions	KERNVIRTADDR=0xc0900000
 
-options		KERNPHYSADDR=0x00900000
-options		KERNVIRTADDR=0xc0900000
-options		PHYSADDR=0x00000000
 options		PHYSMEM_SIZE=0x20000000
-options		STARTUP_PAGETABLE_ADDR=0x00100000

sys/arm/mv/kirkwood/std.kirkwood

@@ -0,0 +1,15 @@
+# $FreeBSD$
+
+# kernel gets loaded at 0x00900000 by the loader, but runs at virtual address
+# 0xc0900000.  RAM starts at 0.  We put the pagetable at a reasonable place
+# in memory, but may need to bounce it higher if there's a problem with this.
+# We could paper over this by loading the kernel at 0xc0000000 virtual, but
+# that leads to other complications, so we'll just reclaim the lower region of
+# ram after we're loaded.  Put the page tables for startup at 1MB.
+makeoptions	KERNPHYSADDR=0x00900000
+makeoptions	KERNVIRTADDR=0xc0900000
+
+options		KERNPHYSADDR=0x00900000
+options		KERNVIRTADDR=0xc0900000
+options		PHYSADDR=0x00000000
+options		STARTUP_PAGETABLE_ADDR=0x00100000