feat(intel): add QSPI get devinfo mailbox cmd

Linux RSU receive QSPI device info from SDM and report to user about
the device info.

Change-Id: Ib41692c9c4888c745a48a0609396aef0ca7fe25b
Signed-off-by: Kah Jing Lee <kah.jing.lee@intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
diff --git a/plat/intel/soc/common/include/socfpga_mailbox.h b/plat/intel/soc/common/include/socfpga_mailbox.h
index 3e44833..fcee101 100644
--- a/plat/intel/soc/common/include/socfpga_mailbox.h
+++ b/plat/intel/soc/common/include/socfpga_mailbox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2019-2023, Intel Corporation. All rights reserved.
+ * Copyright (c) 2024, Altera Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -75,6 +76,7 @@
 #define MBOX_RSU_STATUS					0x5B
 #define MBOX_RSU_UPDATE					0x5C
 #define MBOX_HPS_STAGE_NOTIFY				0x5D
+#define MBOX_RSU_GET_DEVICE_INFO			0x74
 
 /* FCS Command */
 #define MBOX_FCS_GET_PROVISION				0x7B
@@ -249,6 +251,7 @@
 
 int mailbox_rsu_get_spt_offset(uint32_t *resp_buf, uint32_t resp_buf_len);
 int mailbox_rsu_status(uint32_t *resp_buf, uint32_t resp_buf_len);
+int mailbox_rsu_get_device_info(uint32_t *resp_buf, uint32_t resp_buf_len);
 int mailbox_rsu_update(uint32_t *flash_offset);
 int mailbox_hps_stage_notify(uint32_t execution_stage);
 int mailbox_hwmon_readtemp(uint32_t chan, uint32_t *resp_buf);