Fix .travis.yml

.travis.yml

@@ -1,6 +1,10 @@
 language: generic
 dist: bionic
 sudo: false
+env:
+  global:
+    - DEVKITPRO=$HOME
+    - DEVKITARM=$DEVKITPRO/devkitARM
 addons:
   apt:
     packages:
@@ -11,6 +15,8 @@ cache:
   apt: true
 install:
   - pushd $HOME
+  - travis_retry wget https://github.com/devkitPro/buildscripts/releases/download/devkitARM_r52/devkitARM_r52-linux.tar.xz
+  - tar xJf devkitARM*.tar.xz
   - travis_retry git clone https://github.com/pret/agbcc.git
   - cd agbcc && sh build.sh && sh install.sh $TRAVIS_BUILD_DIR
   - popd