[hle/service] stub missing homebrew services, fix NPad/caps crashes (#4264)

Signed-off-by: lizzie <lizzie@eden-emu.dev>

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

this PR adds various missing services (acc:e, acc:e:u1)
to expand homebrew compatibility
notably this also fixes NPad related crashes due to nullref

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4264
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/core/hle/service/bpc/bpc.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -54,11 +57,58 @@ public:
     }
 };
 
+class BPC_C final : public ServiceFramework<BPC_C> {
+public:
+    explicit BPC_C(Core::System& system_) : ServiceFramework{system_, "bpc:c"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "ShutdownSystem"},
+            {1, nullptr, "RebootSystem"},
+            {2, nullptr, "GetWakeupReason"},
+            {3, nullptr, "GetShutdownReason"},
+            {4, nullptr, "GetAcOk"},
+            {5, nullptr, "GetPowerEvent"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+};
+
+class BPC_B final : public ServiceFramework<BPC_B> {
+public:
+    explicit BPC_B(Core::System& system_) : ServiceFramework{system_, "bpc:b"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetSleepButtonState"},
+            {1, nullptr, "GetPowerButtonEvent"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+};
+
+class BPC_W final : public ServiceFramework<BPC_W> {
+public:
+    explicit BPC_W(Core::System& system_) : ServiceFramework{system_, "bpc:w"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "CreateWakeupTimer"},
+            {1, nullptr, "CancelWakeupTimer"},
+            {2, nullptr, "EnableWakeupTimerOnDevice"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+};
+
 void LoopProcess(Core::System& system) {
     auto server_manager = std::make_unique<ServerManager>(system);
 
     server_manager->RegisterNamedService("bpc", std::make_shared<BPC>(system));
     server_manager->RegisterNamedService("bpc:r", std::make_shared<BPC_R>(system));
+    server_manager->RegisterNamedService("bpc:c", std::make_shared<BPC_C>(system));
+    server_manager->RegisterNamedService("bpc:b", std::make_shared<BPC_B>(system));
+    server_manager->RegisterNamedService("bpc:w", std::make_shared<BPC_W>(system));
     ServerManager::RunServer(std::move(server_manager));
 }