[travis] compile with libcec support

.travis.yml

@@ -56,6 +56,7 @@ before_install:
       sudo add-apt-repository -y ppa:team-xbmc/xbmc-ppa-build-depends &&
       sudo add-apt-repository -y ppa:wsnipex/vaapi &&
       sudo add-apt-repository -y ppa:george-edison55/cmake-3.x &&
+      sudo add-apt-repository -y ppa:pulse-eight/libcec &&
       sudo apt-get update -qq;
     fi
 
@@ -69,7 +70,7 @@ install:
 #
   - if [[ "$TRAVIS_OS_NAME" == "linux" && "$BUILD" == "Kodi" ]]; then
       sudo apt-get install -qq automake autopoint build-essential cmake curl default-jre gawk gdb gdc
-      gettext git-core gperf libasound2-dev libass-dev libbz2-dev libcap-dev libcdio-dev libcrossguid-dev libcurl3
+      gettext git-core gperf libasound2-dev libass-dev libbz2-dev libcap-dev libcdio-dev libcec4-dev libcrossguid-dev libcurl3
       libcurl4-openssl-dev libdbus-1-dev libfontconfig-dev libegl1-mesa-dev libfreetype6-dev libfribidi-dev libgif-dev
       libiso9660-dev libjpeg-dev libltdl-dev liblzo2-dev libmicrohttpd-dev libmysqlclient-dev libnfs-dev
       libpcre3-dev libplist-dev libpng-dev libpulse-dev libsdl2-dev libsmbclient-dev libsqlite3-dev libssh-dev