Try prebuilt/linux-x86/toolchain/

<!-- end espmartin mod testing -->
  <project path="prebuilts/gcc/linux-x86/arm/arm-eabi-4.7" name="Mustaavalkosta/android_prebuilts_gcc_linux-x86_arm_arm-eabi-4.7" remote="github" revision="master" />
  <project path="prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.7" name="Mustaavalkosta/android_prebuilts_gcc_linux-x86_arm_arm-linux-androideabi-4.7" remote="github" revision="master" />
  <project path="prebuilt/linux-x86/toolchain/arm-eabi-4.8" name="prebuilts_gcc_linux-x86_arm_arm-eabi-4.8" remote="cfx" revision="jb-devel" />