mpc8xx: remove fads board support

These boards are old enough and have no maintainers.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/arch/powerpc/cpu/mpc8xx/cpu.c b/arch/powerpc/cpu/mpc8xx/cpu.c
index 5c96b5f..eb4432f 100644
--- a/arch/powerpc/cpu/mpc8xx/cpu.c
+++ b/arch/powerpc/cpu/mpc8xx/cpu.c
@@ -97,14 +97,8 @@
 		pre = 'M'; m = 1;
 		if (id_str == NULL)
 			id_str =
-# if defined(CONFIG_MPC852T)
-		"PC852T";
-# elif defined(CONFIG_MPC859T)
+# if defined(CONFIG_MPC859T)
 		"PC859T";
-# elif defined(CONFIG_MPC859DSL)
-		"PC859DSL";
-# elif defined(CONFIG_MPC866T)
-		"PC866T";
 # else
 		"PC866x"; /* Unknown chip from MPC866 family */
 # endif