wifi: iwlwifi: fw: file: don't use [0] for variable arrays

This causes fortify warnings when compiled against recent kernels
with recent compilers, and generally is not supported in the kernel
anymore.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231207044813.367a2c77b9be.I4964ec8ca1d30c7c3163f9873814c8205a1a14eb@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/file.h

@@ -20,7 +20,7 @@ struct iwl_ucode_header {
 			__le32 init_size;	/* bytes of init code */
 			__le32 init_data_size;	/* bytes of init data */
 			__le32 boot_size;	/* bytes of bootstrap code */
-			u8 data[0];		/* in same order as sizes */
+			u8 data[];		/* in same order as sizes */
 		} v1;
 		struct {
 			__le32 build;		/* build number */
@@ -29,7 +29,7 @@ struct iwl_ucode_header {
 			__le32 init_size;	/* bytes of init code */
 			__le32 init_data_size;	/* bytes of init data */
 			__le32 boot_size;	/* bytes of bootstrap code */
-			u8 data[0];		/* in same order as sizes */
+			u8 data[];		/* in same order as sizes */
 		} v2;
 	} u;
 };