classes/xilinx-bsp.bbclass : Add a class to handle xilinx kernel requirments

diff --git a/classes/xilinx-bsp.bbclass b/classes/xilinx-bsp.bbclass
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+# Copyright (C) 2007, Stelios Koroneos - Digital OPSiS, All Rights Reserved
+# Released under the MIT license (see packages/COPYING)
+#
+#This class handles all the intricasies of getting the required files from the 
+#ISE/EDK/project to the kernel and prepare the kernel for compilation.
+#The Xilinx EDK supports 2 different architectures : PowerPC (ppc 405) and Microblaze
+#Only the PowerPC BSP has been tested so far
+#For this to work correctly you need to add XILINX_BSP_PATH and XILINX_BOARD to your 
+#local.conf
+#XILINX_BSP_PATH should have the complete path to your project dir
+#XILINX_BOARD should have the board type i.e ML403
+#
+#Currently supported boards
+#Xilinx ML403
+#More to come soon ;)
+
+do_configure_prepend() {
+
+
+#first check that the XILINX_BSP_PATH and XILINX_BOARD have been defined in local.conf
+if [ -z "${XILINX_BSP_PATH}" ]; then
+   oefatal "XILINX_BSP_PATH not defined ! Exiting..."
+   exit 1
+
+else
+   if [ -z "${XILINX_BOARD}" ]; then
+      oefatal "XILINX_BOARD not defined ! Exiting"
+      exit 1
+   fi
+
+fi
+#now depending on the board type and arch do what is nessesary
+
+case "${XILINX_BOARD}" in
+     ML403)
+        oenote "ML403 board setup"
+        cp -a ${XILINX_BSP_PATH}/ppc405_0/libsrc/linux_2_6_v1_00_a/linux/arch/ppc/platforms/4xx/xparameters/xparameters_ml40x.h \
+                ${S}/arch/ppc/platforms/4xx/xparameters/xparameters_ml403.h
+     ;;
+
+     *    ) 
+      oefatal "! Unknow Xilinx board ! Exiting..."
+      exit 1
+     ;;
+esac               
+
+
+}
+
+
+
+
+