nvhost_ctrl: Stub out IocCtrlEventRegister.

src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp

@@ -19,6 +19,8 @@ u32 nvhost_ctrl::ioctl(Ioctl command, const std::vector<u8>& input, std::vector<
         return IocCtrlEventWait(input, output, false);
     case IoctlCommand::IocCtrlEventWaitAsyncCommand:
         return IocCtrlEventWait(input, output, true);
+    case IoctlCommand::IocCtrlEventRegisterCommand:
+        return IocCtrlEventRegister(input, output);
     }
     UNIMPLEMENTED_MSG("Unimplemented ioctl");
     return 0;
@@ -61,4 +63,10 @@ u32 nvhost_ctrl::IocCtrlEventWait(const std::vector<u8>& input, std::vector<u8>&
     return 0;
 }
 
+u32 nvhost_ctrl::IocCtrlEventRegister(const std::vector<u8>& input, std::vector<u8>& output) {
+    NGLOG_WARNING(Service_NVDRV, "(STUBBED) called");
+    // TODO(bunnei): Implement this.
+    return 0;
+}
+
 } // namespace Service::Nvidia::Devices

src/core/hle/service/nvdrv/devices/nvhost_ctrl.h

@@ -135,6 +135,8 @@ private:
     u32 NvOsGetConfigU32(const std::vector<u8>& input, std::vector<u8>& output);
 
     u32 IocCtrlEventWait(const std::vector<u8>& input, std::vector<u8>& output, bool is_async);
+
+    u32 IocCtrlEventRegister(const std::vector<u8>& input, std::vector<u8>& output);
 };
 
 } // namespace Service::Nvidia::Devices