i40e: Replace one-element array with flex-array member in struct i40e_profile_segment

One-element and zero-length arrays are deprecated. So, replace
one-element array in struct i40e_profile_segment with flexible-array
member.

This results in no differences in binary output.

Link: https://github.com/KSPP/linux/issues/335Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Tested-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/i40e/i40e_type.h

@@ -1486,7 +1486,7 @@ struct i40e_profile_segment {
 	struct i40e_ddp_version version;
 	char name[I40E_DDP_NAME_SIZE];
 	u32 device_table_count;
-	struct i40e_device_id_entry device_table[1];
+	struct i40e_device_id_entry device_table[];
 };
 
 struct i40e_section_table {