arm: atmel: remove the config.mk file

remove the config.mk file
move text base define to board config file for following boards
  - at91sam9m10g45ek
  - at91sam9x5ek

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

board/atmel/at91sam9m10g45ek/config.mk

@@ -1 +0,0 @@
-CONFIG_SYS_TEXT_BASE = 0x73f00000

board/atmel/at91sam9x5ek/config.mk

@@ -1 +0,0 @@
-CONFIG_SYS_TEXT_BASE = 0x26f00000

include/configs/at91sam9m10g45ek.h

@@ -13,6 +13,8 @@
 
 #include <asm/hardware.h>
 
+#define CONFIG_SYS_TEXT_BASE		0x73f00000
+
 #define CONFIG_AT91_LEGACY
 #define CONFIG_ATMEL_LEGACY		/* required until (g)pio is fixed */
 

include/configs/at91sam9x5ek.h

@@ -11,6 +11,8 @@
 
 #include <asm/hardware.h>
 
+#define CONFIG_SYS_TEXT_BASE		0x26f00000
+
 /* ARM asynchronous clock */
 #define CONFIG_SYS_AT91_SLOW_CLOCK	32768
 #define CONFIG_SYS_AT91_MAIN_CLOCK	12000000	/* 12 MHz crystal */