core: Config plg_ldr after its creation

* Also use service manager to retrieve the service

src/core/core.cpp

@@ -449,6 +449,12 @@ System::ResultStatus System::Init(Frontend::EmuWindow& emu_window,
     gpu->SetInterruptHandler(
         [gsp](Service::GSP::InterruptId interrupt_id) { gsp->SignalInterrupt(interrupt_id); });
 
+    auto plg_ldr = Service::PLGLDR::GetService(*this);
+    if (plg_ldr) {
+        plg_ldr->SetEnabled(Settings::values.plugin_loader_enabled.GetValue());
+        plg_ldr->SetAllowGameChangeState(Settings::values.allow_plugin_loader.GetValue());
+    }
+
     LOG_DEBUG(Core, "Initialized OK");
 
     is_powered_on = true;

src/core/hle/service/plgldr/plgldr.cpp

@@ -26,12 +26,10 @@
 #include "common/settings.h"
 #include "core/core.h"
 #include "core/file_sys/plugin_3gx.h"
-#include "core/hle/ipc.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/event.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/shared_memory.h"
 #include "core/hle/service/plgldr/plgldr.h"
 #include "core/loader/loader.h"
 
@@ -290,12 +288,7 @@ void PLG_LDR::GetPluginPath(Kernel::HLERequestContext& ctx) {
 }
 
 std::shared_ptr<PLG_LDR> GetService(Core::System& system) {
-    if (!system.KernelRunning())
+    return system.ServiceManager().GetService<PLG_LDR>("plg:ldr");
-        return nullptr;
-    auto it = system.Kernel().named_ports.find("plg:ldr");
-    if (it != system.Kernel().named_ports.end())
-        return std::static_pointer_cast<PLG_LDR>(it->second->GetServerPort()->hle_handler);
-    return nullptr;
 }
 
 void InstallInterfaces(Core::System& system) {