integrator: move text offset to config

Do away with the config.mk file and move the text offset to the
config files to make things easier.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/include/configs/integratorcp.h b/include/configs/integratorcp.h
index 7ae34b7..ccbdf44 100644
--- a/include/configs/integratorcp.h
+++ b/include/configs/integratorcp.h
@@ -37,6 +37,7 @@
  * High Level Configuration Options
  * (easy to change)
  */
+#define CONFIG_SYS_TEXT_BASE		0x01000000
 #define CONFIG_SYS_MEMTEST_START	0x100000
 #define CONFIG_SYS_MEMTEST_END		0x10000000
 #define CONFIG_SYS_HZ			1000