powerpc: remove icecube_5200, Lite5200, cpci5200, mecp5200, pf5200

These boards are still non-generic boards.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Reinhard Arlt <reinhard.arlt@esd-electronics.com>
diff --git a/doc/README.scrapyard b/doc/README.scrapyard
index a8eca4b..952ab87 100644
--- a/doc/README.scrapyard
+++ b/doc/README.scrapyard
@@ -12,6 +12,11 @@
 
 Board            Arch        CPU            Commit      Removed     Last known maintainer/contact
 =================================================================================================
+icecube_5200     powerpc     mpc5xxx        -           -           Wolfgang Denk <wd@denx.de>
+Lite5200         powerpc     mpc5xxx        -           -
+cpci5200         powerpc     mpc5xxx        -           -           Reinhard Arlt <reinhard.arlt@esd-electronics.com>
+mecp5200         powerpc     mpc5xxx        -           -           Reinhard Arlt <reinhard.arlt@esd-electronics.com>
+pf5200           powerpc     mpc5xxx        -           -           Reinhard Arlt <reinhard.arlt@esd-electronics.com>
 PM520            powerpc     mpc5xxx        -           -           Josef Wagner <Wagner@Microsys.de>
 Total5200        powerpc     mpc5xxx        -           -
 CATcenter        powerpc     ppc4xx         -           -