[EXT] [PATCH] net: fix build with -Wpedantic

[Akhil Goyal]

> Adds the __extension__ attribute to resolve the following warning
> with gcc 4.8.5 on CentOS 7:
> lib/net/rte_macsec.h:38:2: error: type of bit-field 'short_length' is
>   a GCC extension [-Werror=pedantic]
> 
> Fixes: 0aaf097585a6 ("ethdev: add MACsec flow item")
> Cc: gakhil at marvell.com
> 
> Signed-off-by: Ali Alnubani <alialnu at nvidia.com>
> ---
>  lib/net/rte_macsec.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/lib/net/rte_macsec.h b/lib/net/rte_macsec.h
> index 9228ebd083..d0cd2f69ab 100644
> --- a/lib/net/rte_macsec.h
> +++ b/lib/net/rte_macsec.h
> @@ -28,6 +28,7 @@ extern "C" {
>  /**
>   * MACsec Header (SecTAG)
>   */
> +__extension__

RTE_STD_C11 ??


>  struct rte_macsec_hdr {
>  	/**
>  	 * Tag control information and Association number of secure channel.
> --
> 2.25.1