ARM: remove CONFIG_ARM920T defines

CONFIG_CPU_ARM920T was introduced into Kconfig by commit 2e07c249a67e
(kconfig: arm: introduce symbol for ARM CPUs).

This commit removes all the defines of CONFIG_ARM920T and replaces the
only reference in drivers/usb/host/ohci-hcd.c with CONFIG_CPU_ARM920T.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/include/configs/smdk2410.h b/include/configs/smdk2410.h
index d4ae19f..b83c15f 100644
--- a/include/configs/smdk2410.h
+++ b/include/configs/smdk2410.h
@@ -17,8 +17,7 @@
  * High Level Configuration Options
  * (easy to change)
  */
-#define CONFIG_ARM920T		/* This is an ARM920T Core */
-#define CONFIG_S3C24X0		/* in a SAMSUNG S3C24x0-type SoC */
+#define CONFIG_S3C24X0		/* This is a SAMSUNG S3C24x0-type SoC */
 #define CONFIG_S3C2410		/* specifically a SAMSUNG S3C2410 SoC */
 #define CONFIG_SMDK2410		/* on a SAMSUNG SMDK2410 Board */