net/bnxt: remove settings for multiple session

net/bnxt: remove settings for multiple session

Move wc_tcam_slices_per_row and database structure of
global_cfg and if_tbl to session structure to support
multiple TruFlow sessions with different card type under single
DPDK application instance.

Signed-off-by: Jay Ding <jay.ding@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Farah Smith <farah.smith@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>