First of a set of eight patches that adds support for Intel's

IXP4xx family of network processors. The code still needs some
cleanup here and there, but it's to the point that it's should
be OK to push upstream.

Some of the remaining TODOs:

- Cleanup GPIO IRQ handling for edge-trigered HW (none exists ATM)
- Add IDE driver for various platforms
- Misc cleanups

This patch adds the changes to arch/arm/Makefile and arch/arm/Kconfig

arch/arm/Kconfig

@@ -111,6 +111,9 @@ config ARCH_INTEGRATOR
 config ARCH_IOP3XX
 	bool "IOP3xx-based"
 
+config ARCH_IXP4XX
+	bool "IXP4xx-based"
+
 config ARCH_L7200
 	bool "LinkUp-L7200"
 	help
@@ -170,6 +173,8 @@ source "arch/arm/mach-integrator/Kconfig"
 
 source "arch/arm/mach-iop3xx/Kconfig"
 
+source "arch/arm/mach-ixp4xx/Kconfig"
+
 source "arch/arm/mach-pxa/Kconfig"
 
 source "arch/arm/mach-sa1100/Kconfig"
@@ -222,7 +227,7 @@ config FORCE_MAX_ZONEORDER
 
 config DMABOUNCE
 	bool
-	depends on SA1111
+	depends on SA1111 || ARCH_IXP4XX
 	default y
 
 source arch/arm/mm/Kconfig
@@ -252,7 +257,7 @@ config DISCONTIGMEM
 # Now handle the bus types
 config PCI
 	bool "PCI support" if ARCH_INTEGRATOR_AP
-	default y if ARCH_FTVPCI || ARCH_SHARK || FOOTBRIDGE_HOST || ARCH_IOP3XX
+	default y if ARCH_FTVPCI || ARCH_SHARK || FOOTBRIDGE_HOST || ARCH_IOP3XX || ARCH_IXP4XX
 	help
 	  Find out whether you have a PCI motherboard. PCI is the name of a
 	  bus system, i.e. the way the CPU talks to the other stuff inside

arch/arm/Makefile

@@ -92,6 +92,7 @@ textaddr-$(CONFIG_ARCH_CLPS711X)   := 0xc0028000
 textaddr-$(CONFIG_ARCH_FORTUNET)   := 0xc0008000
  machine-$(CONFIG_ARCH_IOP3XX)	   := iop3xx
  machine-$(CONFIG_ARCH_ADIFCC)	   := adifcc
+ machine-$(CONFIG_ARCH_IXP4XX)	   := ixp4xx
  machine-$(CONFIG_ARCH_OMAP)	   := omap
  machine-$(CONFIG_ARCH_S3C2410)	   := s3c2410
  machine-$(CONFIG_ARCH_LH7A40X)	   := lh7a40x