mips: Make u-boot-mips.h a private header

Rather than including this arch-specific header file in common.h, include
it from within mips's u-boot.h header.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/arch/mips/include/asm/u-boot.h b/arch/mips/include/asm/u-boot.h
index af03e8d..68985af 100644
--- a/arch/mips/include/asm/u-boot.h
+++ b/arch/mips/include/asm/u-boot.h
@@ -17,6 +17,7 @@
 
 /* Use the generic board which requires a unified bd_info */
 #include <asm-generic/u-boot.h>
+#include <asm/u-boot-mips.h>
 
 /* For image.h:image_check_target_arch() */
 #define IH_ARCH_DEFAULT IH_ARCH_MIPS
diff --git a/include/common.h b/include/common.h
index fe396c5..f36fed3 100644
--- a/include/common.h
+++ b/include/common.h
@@ -442,7 +442,7 @@
 # include <asm/u-boot-nds32.h>
 #endif /* CONFIG_NDS32 */
 #ifdef CONFIG_MIPS
-# include <asm/u-boot-mips.h>
+# include <asm/u-boot.h>
 #endif /* CONFIG_MIPS */
 #ifdef CONFIG_ARC
 # include <asm/u-boot.h>