* Update bootmanager.cpp

* This *should* fix the clang error

Core::System().GetInstance().IsPoweredOn() -> Core::System::GetInstance().IsPoweredOn()

Adds in a missing EndGameFrame when nvdrv swaps buffers

NV: Move the nvdrv classes into the Nvidia namespace, and move the functionality to a s single module that services call.

# Conflicts:
#	src/core/hle/service/am/applet_oe.cpp
#	src/core/hle/service/apm/apm.cpp

# Conflicts:
#	src/core/hle/kernel/svc.cpp

citra-qt: Rename derivative class name