[Blackfin] arch: add include/boot .gitignore files

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/boot/.gitignore b/arch/blackfin/boot/.gitignore
new file mode 100644
index 0000000..3ae0399
--- /dev/null
+++ b/arch/blackfin/boot/.gitignore
@@ -0,0 +1 @@
++vmImage