ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE] configs have duplicate definitions
on platforms that subscribe them. Instead, just make them generic options
which can be selected on applicable platforms.
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Michael Ellerman
Cc: Benjamin Herrenschmidt
Cc: Paul
ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE] configs have duplicate definitions
on platforms that subscribe them. Instead, just make them generic options
which can be selected on applicable platforms.
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Michael Ellerman
Cc: Benjamin Herrenschmidt
Cc: Paul
