MIPS: ralink: adds Kbuild files

Add the Kbuild symbols and Makefiles needed to actually build the ralink code
from this series

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4899/
diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
index 91b9d69..9a73ce6 100644
--- a/arch/mips/Kbuild.platforms
+++ b/arch/mips/Kbuild.platforms
@@ -22,6 +22,7 @@
 platforms += pnx833x
 platforms += pnx8550
 platforms += powertv
+platforms += ralink
 platforms += rb532
 platforms += sgi-ip22
 platforms += sgi-ip27