[ARM] 4300/1: Add picotux 200 ARM board

Add the picotux 200 ARM board:
 - Enable its machine type in the filter in head.S
 - Add configuration option
 - Add board initialisation
 - Add default configuration

Signed-off-by: Simon Richter <Simon.Richter@kleinhenz.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index bf0d962..e238ad8 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -81,6 +81,13 @@
 	  Select this if you are using KwikByte's KB920x board.
 	  <http://kwikbyte.com/KB9202_description_new.htm>
 
+config MACH_PICOTUX2XX
+	bool "picotux 200"
+	depends on ARCH_AT91RM9200
+	help
+	  Select this if you are using a picotux 200.
+	  <http://www.picotux.com/>
+
 config MACH_KAFA
 	bool "Sperry-Sun KAFA board"
 	depends on ARCH_AT91RM9200