Re-design handling of physical and virtual interfaces

1) Fix message numbering by basing nss_virt_if.h and nss_phys_if.h on nss_if.h
2) Create backward compatible layer for virtual in nss_tx_rx_virt_if.c
3) Create new API in nss_virt_if.c
4) Create backward compatible layer for phsical in nss_tx_rx_phys_if.c
5) Create new API in nss_phys.c

Change-Id: Ibe8c8e60b5e841f0aeb201f8ad7be171c9ae979a
Signed-off-by: Sol Kavy <skavy@codeaurora.org>
15 files changed