ppc4xx: remove AR405 board

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
diff --git a/doc/README.scrapyard b/doc/README.scrapyard
index b4477cb..e9d04b2 100644
--- a/doc/README.scrapyard
+++ b/doc/README.scrapyard
@@ -12,6 +12,7 @@
 
 Board            Arch        CPU            Commit      Removed     Last known maintainer/contact
 =================================================================================================
+AR405            ppc4xx      405gpr         -           -           Matthias Fuchs <matthias.fuchs@esd.eu>
 APC405           ppc4xx      405gpr         -           -           Matthias Fuchs <matthias.fuchs@esd.eu>
 TASREG           m68k        mcf52x2        -           -           Matthias Fuchs <matthias.fuchs@esd.eu>
 A3000            powerpc     mpc824x        -           -