config.net_test: Set compilers paths to local repo's

Android kernel repositories already provide prebuilt compilers that can
be used to isolate the kernel dependencies from the host which builds the
kernel.
Use the prebuilt compiler provided with the kernel repository for the
kernel test.
This solutioion also allows the use of the clang compiler:

[CC={clang,gcc}] build/build_test.sh

Change-Id: I463dabf11bd8fd46d2e4577c82f7f222ed41958f
Bug: none
Test: local "[CC={clang,gcc}] build/build_test.sh" of aosp_kernel-common-android-*
Signed-off-by: Alessio Balsini <balsini@google.com>
1 file changed