simulation: rename wb_addrgen to wb_cfggen

Signed-off-by: Manohar Vanga <manohar.vanga@cern.ch>

simulation/README

@@ -51,12 +51,12 @@ driver. Remember to name the firmware to load accordingly.
 Generating Firmware
 ===================
 
-To generate a Wishbone memory map, we can use the wb_addrgen tool found
+To generate a Wishbone memory map, we can use the wb_cfggen tool found
 in the simulation/fw/ directory.
 
 To generate a firmware file (the wishbone memory space):
 
-$ ./wb_addrgen wbone.list firmware.bin
+$ ./wb_cfggen wbone.list firmware.bin
 
 The wbone.def file specifies the devices that should be attached
 to the Wishbone bus. The format for specifying devices can be seen

simulation/fw/Makefile

 CFLAGS += -I../include
 
-all: wb_addrgen
+all: wb_cfggen
 
-wb_addrgen: wb_addrgen.o
-	gcc wb_addrgen.o -o wb_addrgen
+wb_cfggen: wb_cfggen.o
+	gcc wb_cfggen.o -o wb_cfggen
 
 clean:
-	rm -rf wb_addrgen *.o
+	rm -rf wb_cfggen *.o