Power: remove support for Freescale MPC8220

The Freescale MPC8220 Power Architecture processors have long reached
EOL; Freescale does not even list these any more on their web site.

Remove the code to avoid wasting maitaining efforts on dead stuff.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>
diff --git a/doc/README.scrapyard b/doc/README.scrapyard
index 48c7e4a..9223f6e 100644
--- a/doc/README.scrapyard
+++ b/doc/README.scrapyard
@@ -11,6 +11,9 @@
 
 Board            Arch        CPU            Commit      Removed     Last known maintainer/contact
 =================================================================================================
+Alaska8220       powerpc     mpc8220        -           -
+Yukon8220        powerpc     mpc8220        -           -
+sorcery          powerpc     mpc8220        -           -
 smdk6400         arm         arm1176        52587f1	2013-04-12  Zhong Hongbo <bocui107@gmail.com>
 ns9750dev        arm         arm926ejs      4cfc611	2013-02-28  Markus Pietrek <mpietrek@fsforth.de>
 AMX860           powerpc     mpc860         1b0757e     2012-10-28  Wolfgang Denk <wd@denx.de>