MIPS: Introduce arch/mips/Kbuild

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
To: linux-mips <linux-mips@linux-mips.org>
To: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/1300/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kbuild

@@ -0,0 +1,6 @@
+# mips object files
+# The object files are linked as core-y files would be linked
+
+obj-y += kernel/
+obj-y += mm/
+obj-y += math-emu/