net/bnxt: fix TruFlow devarg handling

net/bnxt: fix TruFlow devarg handling

Set the TRUFLOW Enable bit in bp->flags only if the value passed in
devargs was 1. Otherwise set it to 0.

Fixes: 313ac35ac701 ("net/bnxt: support ULP session manager init")
Cc: stable@dpdk.org
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Mike Baucom <michael.baucom@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>