MIPS: Jazz: Migrate to new platform makefile style.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
index c074ee2..7973bb0 100644
--- a/arch/mips/Kbuild.platforms
+++ b/arch/mips/Kbuild.platforms
@@ -3,6 +3,7 @@
 platforms += alchemy
 platforms += ar7
 platforms += cobalt
+platforms += jazz
 platforms += loongson
 platforms += mipssim
 platforms += pmc-sierra