net/bnxt: allow group ID 0 for RSS action

net/bnxt: allow group ID 0 for RSS action

Allow RSS action with group ID 0. The RSS match check will ensure if
requested RSS action configuration parameters should be allowed as per
the VNIC's RSS configuration or not and if it does match as it is
by design in OVS-DPDK use case, the default vnic can be used to create
the filter. As part of this ensure that rx_queue_cnt for the default
vnic is setup during init as this field was being set only for non-zero
vnics while handling RSS action for flow create.
Check for out of bounds error while accessing the vnic array.

Fixes: adc0f81c6552 ("net/bnxt: support RSS action")
Cc: stable@dpdk.org
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>