TPM: Switch to __packed instead of __attribute__((packed))

This seems to be preferred these days.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>

drivers/char/tpm/tpm_acpi.c

@@ -33,13 +33,13 @@ struct acpi_tcpa {
 	u16 platform_class;
 	union {
 		struct client_hdr {
-			u32 log_max_len __attribute__ ((packed));
-			u64 log_start_addr __attribute__ ((packed));
+			u32 log_max_len __packed;
+			u64 log_start_addr __packed;
 		} client;
 		struct server_hdr {
 			u16 reserved;
-			u64 log_max_len __attribute__ ((packed));
-			u64 log_start_addr __attribute__ ((packed));
+			u64 log_max_len __packed;
+			u64 log_start_addr __packed;
 		} server;
 	};
 };