Merge PRs for AMD GPUs

These PR's include:

• [VIDEOPRT] Expand how resource usage is handled in videoprt
• [NTGDI] Minimal pass of fixing ExtEscape
• [NTOSKRNL] NpxThread protections for SMP and GPU drivers
• [WIN32SS] Remove NATIVE_REACTX check - reenable Oleg's code

• [NTOS:ARM3] i386 specific: Change calculation for more system PTEs

• [SDK:WINE] FFS has to return correct values on both msvc and gcc

• [USBPORT][USBHUB] Improve Unplug and Plugin stability