crypto/dpaa2_sec: add check for gcc toolchain
crypto/dpaa2_sec: add check for gcc toolchain

Fixes: 6a95466d78de ("crypto/dpaa2_sec: fix build with gcc 7.1")

Signed-off-by: Akhil Goyal <74d7c4c993a22c1d4f60c46ff3d95c969a24a25c@nxp.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk