.gitignore: Don't track .ccwrap from scan-build.

Change-Id: I5757023b844e965d797e6b1a7e6955940f6d3363
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5317
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/.gitignore b/.gitignore
index 0ad15ef..96af4a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 .config
 .config.old
 .xcompile
+.ccwrap
 build/
 coreboot-builds/
 payloads/external/FILO/filo/