net/mlx5: Fix length of irq_index in chars

The maximum irq_index can be 2047, This means irq_name should have 4
characters reserve for the irq_index. Hence, increase it to 4.

Fixes: 3af26495 ("net/mlx5: Enlarge interrupt field in CREATE_EQ")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c

@@ -13,8 +13,8 @@
 #endif
 
 #define MLX5_MAX_IRQ_NAME (32)
-/* max irq_index is 255. three chars */
-#define MLX5_MAX_IRQ_IDX_CHARS (3)
+/* max irq_index is 2047, so four chars */
+#define MLX5_MAX_IRQ_IDX_CHARS (4)
 
 #define MLX5_SFS_PER_CTRL_IRQ 64
 #define MLX5_IRQ_CTRL_SF_MAX 8