ARM: mach-pnx4008: Remove architecture

This patch removes the ARM architecture mach-pnx4008. No direct support or user
feedback since 2006. Acknowledgements from NXP/Philips and Linux arm-soc
maintainers.

Signed-off-by: Roland Stigge <stigge@antcom.de>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 53d7571..ad1bb93 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -237,12 +237,12 @@
 	  here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
 
 config PNX4008_WATCHDOG
-	tristate "PNX4008 and LPC32XX Watchdog"
-	depends on ARCH_PNX4008 || ARCH_LPC32XX
+	tristate "LPC32XX Watchdog"
+	depends on ARCH_LPC32XX
 	select WATCHDOG_CORE
 	help
 	  Say Y here if to include support for the watchdog timer
-	  in the PNX4008 or LPC32XX processor.
+	  in the LPC32XX processor.
 	  This driver can be built as a module by choosing M. The module
 	  will be called pnx4008_wdt.