Fix Travis CI deploy directory.

Change-Id: I501b72e5d33b26075488c0af999713c192c4ac0b
Reviewed-on: https://swiftshader-review.googlesource.com/17848
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/.travis.yml b/.travis.yml
index 15d81da..e869116 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,4 +31,4 @@
   skip_cleanup: true
   acl: public-read
   upload-dir: Linux
-  local-dir: out
\ No newline at end of file
+  local-dir: $TRAVIS_BUILD_DIR/out
\ No newline at end of file