nand_spl: remove simpc8313 support

Commit 3d5a335c announced that all the nand_spl boards
would be removed before v2014.07 release.

Also update README.scrapyard.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/doc/README.scrapyard b/doc/README.scrapyard
index e2157e0..6c6be68 100644
--- a/doc/README.scrapyard
+++ b/doc/README.scrapyard
@@ -11,16 +11,17 @@
 
 Board            Arch        CPU            Commit      Removed     Last known maintainer/contact
 =================================================================================================
-hidden_dragon    powerpc     mpc824x        -           -           Yusdi Santoso <yusdi_santoso@adaptec.com>
-debris           powerpc     mpc824x        -           -           Sangmoon Kim <dogoil@etinsys.com>
-kvme080          powerpc     mpc824x        -           -           Sangmoon Kim <dogoil@etinsys.com>
-ep8248           powerpc     mpc8260        -           -           Yuli Barcohen <yuli@arabellasw.com>
-ispan            powerpc     mpc8260        -           -           Yuli Barcohen <yuli@arabellasw.com>
-rattler          powerpc     mpc8260        -           -           Yuli Barcohen <yuli@arabellasw.com>
-zpc1900          powerpc     mpc8260        -           -           Yuli Barcohen <yuli@arabellasw.com>
-mpc8260ads       powerpc     mpc8260        -           -           Yuli Barcohen <yuli@arabellasw.com>
-adder            powerpc     mpc8xx         -           -           Yuli Barcohen <yuli@arabellasw.com>
-quad100hd	 powerpc     ppc405ep	    -		-	    Gary Jennejohn <gljennjohn@googlemail.com>
+simpc8313        powerpc     mpc83xx        -           2014-04-28  Ron Madrid <info@sheldoninst.com>
+hidden_dragon    powerpc     mpc824x        3fe1a854    2014-05-30  Yusdi Santoso <yusdi_santoso@adaptec.com>
+debris           powerpc     mpc824x        7edb1f7b    2014-05-30  Sangmoon Kim <dogoil@etinsys.com>
+kvme080          powerpc     mpc824x        2868f862    2014-05-30  Sangmoon Kim <dogoil@etinsys.com>
+ep8248           powerpc     mpc8260        49ad566d    2014-05-30  Yuli Barcohen <yuli@arabellasw.com>
+ispan            powerpc     mpc8260        80bae39a    2014-05-30  Yuli Barcohen <yuli@arabellasw.com>
+rattler          powerpc     mpc8260        d0664db4    2014-05-30  Yuli Barcohen <yuli@arabellasw.com>
+zpc1900          powerpc     mpc8260        6f80bb48    2014-05-30  Yuli Barcohen <yuli@arabellasw.com>
+mpc8260ads       powerpc     mpc8260        facb6725    2014-05-30  Yuli Barcohen <yuli@arabellasw.com>
+adder            powerpc     mpc8xx         373a9788    2014-05-30  Yuli Barcohen <yuli@arabellasw.com>
+quad100hd        powerpc     ppc405ep       3569571d    2014-05-30  Gary Jennejohn <gljennjohn@googlemail.com>
 lubbock          arm         pxa            36bf57b     2014-04-18  Kyle Harris <kharris@nexus-tech.net>
 EVB64260	 powerpc     mpc824x        bb3aef9	2014-04-18
 MOUSSE           powerpc     mpc824x        03f2ecc     2014-04-18