video: add wrappers for ttf type files to .gitignore

The scripts/Makefile.lib generates an assembler file (*.S) to wrap the
font data for each file of type ttf defined in Kconfig.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
diff --git a/drivers/video/fonts/.gitignore b/drivers/video/fonts/.gitignore
new file mode 100644
index 0000000..86ec950
--- /dev/null
+++ b/drivers/video/fonts/.gitignore
@@ -0,0 +1 @@
+*.S