Fix: Incorrect max instance for get payload status

Response data byte 2 value for the get payload activation status cmd,
was 0x10 which is decoded as 0 instances activated since
bit 7:4 reserved.
Currently SOL payload is only supported and there can be 1 max sol
payload instance. This code provides fix for the same by correcting
sol payload instance capacity.

Tested:
Verified by issuing get payload status activation command through
ipmitool.

ipmitool -I lanplus -H <ip> -U xxxx -P xxxxxxx raw 0x06 0x4A 0x01
 01 00 00                                                 //Response

Signed-off-by: Ayushi Smriti <smriti.ayushi@linux.intel.com>
Change-Id: I874fe3fe784417c9460a1cee5bb5e6bc36291012
diff --git a/command/payload_cmds.cpp b/command/payload_cmds.cpp
index 8f573a8..219f2d5 100644
--- a/command/payload_cmds.cpp
+++ b/command/payload_cmds.cpp
@@ -208,7 +208,9 @@
     }
 
     response->completionCode = IPMI_CC_OK;
-    response->capacity = MAX_PAYLOAD_INSTANCES;
+
+    constexpr size_t maxSolPayloadInstances = 1;
+    response->capacity = maxSolPayloadInstances;
 
     // Currently we support only one SOL session
     response->instance1 =