i40e: Increase minimum number of allocated VSI

This patch increases minimum number of allocated VSIs, so as to resolve
failure adding VSI for VF when 64-VFs assigned to a PF. The driver
supports up to 128 VFs per device, users can decide to enable up to
64-VFs on a single PF, especially 2 X 40 devices. In that scenario, with
VMDq co-existence, there would be starvation of VSIs - with this patch,
supported features would have enough VSIs for configuration now.

Change-ID: If084f4cd823667af8fe7fdc11489c705b32039d5
Signed-off-by: Akeem Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e.h

@@ -74,7 +74,7 @@
 #define I40E_MIN_NUM_DESCRIPTORS	64
 #define I40E_MIN_MSIX			2
 #define I40E_DEFAULT_NUM_VMDQ_VSI	8 /* max 256 VSIs */
-#define I40E_MIN_VSI_ALLOC		51 /* LAN, ATR, FCOE, 32 VF, 16 VMDQ */
+#define I40E_MIN_VSI_ALLOC		83 /* LAN, ATR, FCOE, 64 VF */
 /* max 16 qps */
 #define i40e_default_queues_per_vmdq(pf) \
 		(((pf)->flags & I40E_FLAG_RSS_AQ_CAPABLE) ? 4 : 1)