[POWERPC] spufs: add .gitignore for spu_save_dump.h & spu_restore_dump.h

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

arch/powerpc/platforms/cell/spufs/.gitignore

@@ -0,0 +1,2 @@
+spu_save_dump.h
+spu_restore_dump.h