bnxt_en: Refactor ring reservation functions

The current functions to reserve hardware rings pass in 6 different ring
or resource types as parameters.  Add a structure bnxt_hw_rings to
consolidate all these parameters and pass the structure pointer instead
to these functions.  Add 2 related helper functions also.  This makes
the code cleaner and makes it easier to add new resources to be
reserved.
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1254,6 +1254,15 @@ struct bnxt_vnic_info {
 #define BNXT_VNIC_RFS_NEW_RSS_FLAG	0x10
 };
 
+struct bnxt_hw_rings {
+	int tx;
+	int rx;
+	int grp;
+	int cp;
+	int stat;
+	int vnic;
+};
+
 struct bnxt_hw_resc {
 	u16	min_rsscos_ctxs;
 	u16	max_rsscos_ctxs;