ppc4xx: Generic architecture for xilinx ppc405(v3)

As "ppc44x: Unification of virtex5 pp440 boards" did for the xilinx
ppc440 boards, this patch presents a common architecture for all the
xilinx ppc405 boards.

Any custom xilinx ppc405 board can be added very easily with no code
duplicity.

This patch also adds a simple generic board, that can be used on almost
any design with xilinx ppc405 replacing the file ppc405-generic/xparameters.h

This patch is prepared to work with the latest version of EDK (10.1)

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@uam.es>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/CREDITS b/CREDITS
index 3767322..9ddf0d2 100644
--- a/CREDITS
+++ b/CREDITS
@@ -407,6 +407,7 @@
 E: ricardo.ribalda@uam.es
 D: PPC440x5 (Virtex5), ML507 Board, eeprom_simul, adt7460, v5fx30teval
 D: Virtex ppc440 generic architecture
+D: Virtex ppc405 generic architecture
 W: http://www.ii.uam.es/~rribalda
 
 N: Stefan Roese