ci: travis-ci: add initial travis.ci configuration file.

This file should install a docker image and build all targets using gcc.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>

.travis.yml

@@ -0,0 +1,14 @@
+sudo: required
+
+language: c
+
+services:
+  - docker
+
+before_install:
+  - docker build --build-arg UID=$(id -u) -t sof .
+
+script:
+  - docker run -it -v `pwd`:/home/sof/work/sof.git \
+           -v `pwd`/../soft.git:/home/sof/work/soft.git \
+	   --user `id -u` sof ./scripts/xtensa-build-all.sh -l