Revert "qsd8k-common: use linaro 4.9 gcc instead of 4.4.3 gcc"

This is causing boot issues on supersonic.

This reverts commit 698758092c4c537d4d49b66d27b41c89670eee6e.

Change-Id: I758f7999ad48e547326a6b15cc8be1c264d75348