libpldm: Added encode API for GetStatus request

The UA sends this command to acquire the status of the FD/FDP. This
implementation works with DSP0267_1.1.0, DSP0267_1.0.1 and
DSP0267_1.0.0.

Tested: Unit tests passed

Signed-off-by: gokulsanker <gokul.sanker.v.g@intel.com>
Change-Id: I413a5456f56ddcf6de18ac373b203989a8020834
diff --git a/libpldm/firmware_update.c b/libpldm/firmware_update.c
index cf8080e..4e98e59 100644
--- a/libpldm/firmware_update.c
+++ b/libpldm/firmware_update.c
@@ -1257,3 +1257,27 @@
 

 	return PLDM_SUCCESS;

 }

+

+int encode_get_status_req(uint8_t instance_id, struct pldm_msg *msg,

+			  size_t payload_length)

+{

+	if (msg == NULL) {

+		return PLDM_ERROR_INVALID_DATA;

+	}

+

+	if (payload_length != PLDM_GET_STATUS_REQ_BYTES) {

+		return PLDM_ERROR_INVALID_LENGTH;

+	}

+

+	struct pldm_header_info header = {0};

+	header.instance = instance_id;

+	header.msg_type = PLDM_REQUEST;

+	header.pldm_type = PLDM_FWUP;

+	header.command = PLDM_GET_STATUS;

+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));

+	if (rc) {

+		return rc;

+	}

+

+	return PLDM_SUCCESS;

+}