[POWERPC] Virtex: Add Kconfig macros for Xilinx Virtex board support

Add the needed kconfig macros to enable Xilinx Virtex board support
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

arch/powerpc/platforms/40x/Kconfig

@@ -61,13 +61,22 @@ config WALNUT
 	help
 	  This option enables support for the IBM PPC405GP evaluation board.
 
-#config XILINX_ML300
-#	bool "Xilinx-ML300"
-#	depends on 40x
-#	default y
-#	select VIRTEX_II_PRO
-#	help
-#	  This option enables support for the Xilinx ML300 evaluation board.
+config XILINX_VIRTEX_GENERIC_BOARD
+	bool "Generic Xilinx Virtex board"
+	depends on 40x
+	default n
+	select XILINX_VIRTEX_II_PRO
+	select XILINX_VIRTEX_4_FX
+	help
+	  This option enables generic support for Xilinx Virtex based boards.
+
+	  The generic virtex board support matches any device tree which
+	  specifies 'xilinx,virtex' in its compatible field.  This includes
+	  the Xilinx ML3xx and ML4xx reference designs using the powerpc
+	  core.
+
+	  Most Virtex designs should use this unless it needs to do some
+	  special configuration at board probe time.
 
 # 40x specific CPU modules, selected based on the board above.
 config NP405H
@@ -91,11 +100,19 @@ config 405EP
 config 405GPR
 	bool
 
-config VIRTEX_II_PRO
+config XILINX_VIRTEX
 	bool
+
+config XILINX_VIRTEX_II_PRO
+	bool
+	select XILINX_VIRTEX
 	select IBM405_ERR77
 	select IBM405_ERR51
 
+config XILINX_VIRTEX_4_FX
+	bool
+	select XILINX_VIRTEX
+
 config STB03xxx
 	bool
 	select IBM405_ERR77
@@ -111,11 +128,6 @@ config IBM405_ERR77
 config IBM405_ERR51
 	bool
 
-#config XILINX_OCP
-#	bool
-#	depends on XILINX_ML300
-#	default y
-
 #config BIOS_FIXUP
 #	bool
 #	depends on BUBINGA || EP405 || SYCAMORE || WALNUT