add Coverity .travis.yml

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..4076a20
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,39 @@
+language: c
+compiler:
+ - gcc
+RUN if [ `arch` = "x86_64" ]; then wget https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/x86_64-gcc-8.1.0-nolibc-powerpc64-linux.tar.xz; tar -C /opt/cross -xf x86_64-gcc-8.1.0-nolibc-powerpc64-linux.tar.xz; fi
+
+env:
+    global:
+        - CROSS=/opt/cross/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-
+        - HOSTCC=gcc-4.8
+        # The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
+        #   via the "travis encrypt" command using the project repo's public key
+        - secure: "MpNEGFa1VrF/vsQq24n5UgfRbz1wVC6B8mubFnyK4gX0IuQ9xhWuTzMLUQF9UJxe5jnC2DTmVUvYTYN/hggw+PpYwbOOAE0QGR5pmPHA4PSRmc5pxt1q18/sv7EPFw66GFyWJq94nWjpigyKQ8KGtA67j1xFqrDoS43OA76WZgo="
+
+sudo: required
+dist: trusty
+
+before_install:
+    - echo -n | openssl s_client -connect scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sudo tee -a /etc/ssl/certs/ca-certificates.crt
+    - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test &&
+        sudo apt-get update -qq &&
+        sudo apt-get install -y gcc-4.8 libstdc++6 valgrind expect xterm &&
+        sudo apt-get install -y gcc-arm-linux-gnueabi gcc device-tree-compiler &&
+        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50 &&
+        wget https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/x86_64-gcc-8.1.0-nolibc-powerpc64-linux.tar.xz &&
+        sudo mkdir /opt/cross &&
+        sudo tar -C /opt/cross -xvf x86_64-gcc-8.1.0-nolibc-powerpc64-linux.tar.xz
+
+script:
+   - echo 'Coverity build'
+
+addons:
+  coverity_scan:
+    project:
+      name: "open-power/skiboot"
+      description: "Build submitted via Travis CI"
+    notification_email: stewart@linux.vnet.ibm.com
+    build_command_prepend: "cov-configure --comptype gcc --compiler powerpc64-linux-gcc --template; cov-configure --comptype gcc --compiler powerpc64le-linux-gnu-gcc; cov-configure --comptype gcc --compiler arm-linux-gnueabi-gcc; cov-configure --comptype gcc --compiler x86_64-linux-gnu-gcc"
+    build_command: "make -j4 all check"
+    branch_pattern: coverity_scan