net/bnxt: fix TQM ring context memory size

net/bnxt: fix TQM ring context memory size

The current formulas to calculate the TQM slow path and fast path ring
context memory sizes are not quite correct. TQM slow path entry is
array index 0 of ctx->tqm_mem[]. The other array entries are for fast
path. Fix these sizes according to firmware spec. for 57500 and newer
chips.

Fixes: cc5e26b8ef98 ("net/bnxt: increase TQM entry allocation")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>