ARM: remove CONFIG_ARM1136 defines

CONFIG_CPU_ARM1136 was introduced into Kconfig by commit 2e07c249a67e
(kconfig: arm: introduce symbol for ARM CPUs).

This commit removes all the defines of CONFIG_ARM1136 and replaces
the only reference in arch/arm/lib/cache.c with CONFIG_CPU_ARM1136.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/include/configs/mx31pdk.h b/include/configs/mx31pdk.h
index bc4583b..2a3e53c 100644
--- a/include/configs/mx31pdk.h
+++ b/include/configs/mx31pdk.h
@@ -17,8 +17,7 @@
 #include <asm/arch/imx-regs.h>
 
 /* High Level Configuration Options */
-#define CONFIG_ARM1136			/* This is an arm1136 CPU core */
-#define CONFIG_MX31			/* in a mx31 */
+#define CONFIG_MX31			/* This is a mx31 */
 
 #define CONFIG_SYS_GENERIC_BOARD