MPC8315ERDB: Remove CONFIG_MPC8315ERDB

CONFIG_MPC8315ERDB is unused, and TARGET_MPC8315ERDB could replace it.

Hence, get rid of CONFIG_MPC8315ERDB.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/include/configs/MPC8315ERDB.h b/include/configs/MPC8315ERDB.h
index a2b5b07..c373a0a 100644
--- a/include/configs/MPC8315ERDB.h
+++ b/include/configs/MPC8315ERDB.h
@@ -22,7 +22,6 @@
  * High Level Configuration Options
  */
 #define CONFIG_E300		1 /* E300 family */
-#define CONFIG_MPC8315ERDB	1 /* MPC8315ERDB board specific */
 
 /*
  * System Clock Setup
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index d70b9ff..ef7835f 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -1219,7 +1219,6 @@
 CONFIG_MMC_SUNXI_SLOT
 CONFIG_MMU
 CONFIG_MONITOR_IS_IN_RAM
-CONFIG_MPC8315ERDB
 CONFIG_MPC837XEMDS
 CONFIG_MPC837XERDB
 CONFIG_MPC83XX_GPIO