ARM: at91: remove redundant ARM926EJS definition in board config files

As at91 board config file will include the SoC header, so we can remove
the ARM926EJS definition in board config files.
Signed-off-by: NJosh Wu <josh.wu@atmel.com>
Signed-off-by: NAndreas Bießmann <andreas.devel@googlemail.com>

include/configs/at91sam9n12ek.h

@@ -18,8 +18,6 @@
 
 #define CONFIG_SYS_TEXT_BASE		0x26f00000
 
-#define CONFIG_ARM926EJS
-
 /* ARM asynchronous clock */
 #define CONFIG_SYS_AT91_SLOW_CLOCK	32768		/* slow clock xtal */
 #define CONFIG_SYS_AT91_MAIN_CLOCK	16000000	/* main clock xtal */

include/configs/ethernut5.h

@@ -23,7 +23,6 @@
 #define CONFIG_MACH_TYPE MACH_TYPE_ETHERNUT5
 
 /* CPU information */
-#define CONFIG_ARM926EJS
 #define CONFIG_DISPLAY_CPUINFO		/* Display at console. */
 #define CONFIG_ARCH_CPU_INIT
 

include/configs/vl_ma2sc.h

@@ -13,7 +13,6 @@
 
 /*--------------------------------------------------------------------------*/
 
-#define CONFIG_ARM926EJS		/* This is an ARM926EJS Core	*/
 #define CONFIG_AT91SAM9263		/* It's an Atmel AT91SAM9263 SoC*/
 #define CONFIG_VL_MA2SC			/* on an VL_MA2SC Board	*/
 #define CONFIG_ARCH_CPU_INIT