MIPS: factor out endianess flag handling to arch config.mk

This is CPU independent and should be configured architecture-wide.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/include/configs/qi_lb60.h b/include/configs/qi_lb60.h
index a3fc465..4bb5bbc 100644
--- a/include/configs/qi_lb60.h
+++ b/include/configs/qi_lb60.h
@@ -11,6 +11,7 @@
 #define __CONFIG_QI_LB60_H
 
 #define CONFIG_MIPS32		/* MIPS32 CPU core */
+#define CONFIG_SYS_LITTLE_ENDIAN
 #define CONFIG_JZSOC		/* Jz SoC */
 #define CONFIG_JZ4740		/* Jz4740 SoC */
 #define CONFIG_NAND_JZ4740