NetFn: Use api.hpp instead of api.h

Since NetFn declared in api.h has been gradually deprecated, this
submission is to use api.hpp instead of api.h.

https://gerrit.openbmc.org/c/openbmc/phosphor-host-ipmid/+/79391

Change-Id: I6f15b2de43d976bf626e494ca70bad9d8cdd55fc
Signed-off-by: George Liu <liuxiwei@ieisystem.com>
diff --git a/src/appcommands.cpp b/src/appcommands.cpp
index ac1784b..7ffcd2d 100644
--- a/src/appcommands.cpp
+++ b/src/appcommands.cpp
@@ -496,19 +496,19 @@
         file.close();
     }
 
-    ipmiPrintAndRegister(NETFUN_APP, CMD_APP_GET_SELFTEST_RESULTS, NULL,
+    ipmiPrintAndRegister(ipmi::netFnApp, CMD_APP_GET_SELFTEST_RESULTS, NULL,
                          ipmiAppGetSTResults,
                          PRIVILEGE_USER); // Get Self Test Results
-    ipmiPrintAndRegister(NETFUN_APP, CMD_APP_MFR_TEST_ON, NULL,
+    ipmiPrintAndRegister(ipmi::netFnApp, CMD_APP_MFR_TEST_ON, NULL,
                          ipmiAppMfrTestOn,
                          PRIVILEGE_USER); // Manufacturing Test On
-    ipmiPrintAndRegister(NETFUN_APP, CMD_APP_SET_GLOBAL_ENABLES, NULL,
+    ipmiPrintAndRegister(ipmi::netFnApp, CMD_APP_SET_GLOBAL_ENABLES, NULL,
                          ipmiAppSetGlobalEnables,
                          PRIVILEGE_USER); // Set Global Enables
-    ipmiPrintAndRegister(NETFUN_APP, CMD_APP_GET_GLOBAL_ENABLES, NULL,
+    ipmiPrintAndRegister(ipmi::netFnApp, CMD_APP_GET_GLOBAL_ENABLES, NULL,
                          ipmiAppGetGlobalEnables,
                          PRIVILEGE_USER); // Get Global Enables
-    ipmiPrintAndRegister(NETFUN_APP, CMD_APP_CLEAR_MESSAGE_FLAGS, NULL,
+    ipmiPrintAndRegister(ipmi::netFnApp, CMD_APP_CLEAR_MESSAGE_FLAGS, NULL,
                          ipmiAppClearMsgFlags,
                          PRIVILEGE_USER); // Clear Message flags
 #if BIC_ENABLED
@@ -516,7 +516,7 @@
                           ipmi::app::cmdGetSystemGuid, ipmi::Privilege::User,
                           ipmiAppGetSysGUID);
 #else
-    ipmiPrintAndRegister(NETFUN_APP, CMD_APP_GET_SYS_GUID, NULL,
+    ipmiPrintAndRegister(ipmi::netFnApp, CMD_APP_GET_SYS_GUID, NULL,
                          ipmiAppGetSysGUID,
                          PRIVILEGE_USER); // Get System GUID
 #endif