rpmi/sysreset: Add error codes for SYSRST_RESET

SYSRST_RESET service can return if the service does not
complete successfully. Add the possible error codes

Signed-off-by: Rahul Pathak <[email protected]>

src/srvgrp-system-reset.adoc

@@ -184,8 +184,8 @@ default. System Warm Reset support can be discovered with this service.
 This service is used to initiate the system reset or system shutdown.
 The application processor must only request supported reset types, discovered
 using the `SYSRST_GET_ATTRIBUTES` service except for System Shutdown and System
-Cold Reset which are supported by default. Requesting an unsupported or
-invalid reset type may result in the system entering a non-functional state.
+Cold Reset which are supported by default. This service does not return in case
+of successful reset.
 
 [#table_sysreset_sysreset_request_data]
 .Request Data
@@ -205,7 +205,25 @@ invalid reset type may result in the system entering a non-functional state.
 
 [#table_sysreset_sysreset_response_data]
 .Response Data
-[cols="1", width=100%, align="center", options="header"]
-|===
-| NA
+[cols="1, 2, 1, 7a", width=100%, align="center", options="header"]
 |===
+| Word
+| Name
+| Type
+| Description
+
+| 0
+| STATUS
+| int32
+| Return error code
+
+[cols="5,5a", options="header"]
+!===
+! Error Code
+! Description
+
+! RPMI_ERR_INVALID_PARAM
+! `RESET_TYPE` is not supported or invalid.
+!===
+- Other errors <<table_error_codes>>
+|===