[PATCH 0/1] MR4861: win32u: Preserve rawinput device instance ID case in add_device().

[Nicholas Tay (＠ntay)]

In ntoskrnl.exe, when a PnP device interface is registered, the
interface path casing is retained, with only the hardware ID being upper
case. Thus, this patch looks to align the behaviour between PnP and
rawinput, particularly for games that seem to rely on these two strings
being consistent for hotplug.

This updated behaviour also seems consistent with Windows.