arm: atmel: cpux9k2: add missing cache configs

* add CONFIG_SYS_CACHELINE_SIZE to eb_cpux9k2 board config header
* dissable dcache (CONFIG_SYS_DCACHE_OFF) for eb_cpux9k2

Signed-off-by: Jens Scharsig (BuS Elektronik) <esw@bus-elektronik.de>

include/configs/eb_cpux9k2.h

@@ -43,6 +43,10 @@
 
 #define MACH_TYPE_EB_CPUX9K2		1977
 #define CONFIG_MACH_TYPE		MACH_TYPE_EB_CPUX9K2
+
+#define CONFIG_SYS_CACHELINE_SIZE	32
+#define CONFIG_SYS_DCACHE_OFF
+
 /*--------------------------------------------------------------------------*/
 #ifndef CONFIG_RAMBOOT
 #define CONFIG_SYS_TEXT_BASE		0x00000000
@@ -56,7 +60,6 @@
 #define CONFIG_SYS_U_BOOT_BASE		PHYS_FLASH_1
 #define CONFIG_SYS_U_BOOT_SIZE		0x60000 /* 384 KBytes */
 
-
 #define CONFIG_BOOT_RETRY_TIME		30
 #define CONFIG_CMDLINE_EDITING