Use latest GCC toolchain for all other than kernel

When selecting the GCC toolchain, use the latest version available to us except
for the kernel. U-boot and kvm-unit-tests require more recent versions of GCC,
and the purpose of the test with older toolchains is to test the kernel.

Change-Id: I8f85ad4f8ec09be46d68c238f3c5ccbc88431178
1 file changed
tree: a8363816676d0494cfbf762a1b9a0a618b432529
  1. aarch64/
  2. crosvm/
  3. cuttlefish/
  4. kvm-unit-tests/
  5. common.inc
  6. Makefile