Travis-CI: Update compiler to ARM-GCC 6.2.

.travis.yml

@@ -14,9 +14,9 @@ notifications:
       - "Firmware download : https://portapack-h1-builds.s3.amazonaws.com/%{repository_slug}/%{build_number}/%{build_number}.1/build/firmware/portapack-h1-firmware-%{commit}.tar.bz2"
 
 before_script:
-  - wget https://launchpad.net/gcc-arm-embedded/5.0/5-2016-q3-update/+download/gcc-arm-none-eabi-5_4-2016q3-20160926-linux.tar.bz2 -O /tmp/gcc-arm.tar.bz2
+  - wget https://developer.arm.com/-/media/Files/downloads/gnu-rm/6-2016q4/gcc-arm-none-eabi-6_2-2016q4-20161216-linux.tar.bz2 -O /tmp/gcc-arm.tar.bz2
   - tar -xf /tmp/gcc-arm.tar.bz2
-  - export PATH=$PWD/gcc-arm-none-eabi-5_4-2016q3/bin:$PATH
+  - export PATH=$PWD/gcc-arm-none-eabi-6_2-2016q4/bin:$PATH
   - export CC="arm-none-eabi-gcc"
   - export CXX="arm-none-eabi-g++"