BAR2 verify test fix: remove PRAMIN sync + contiguous ALLOC + vidmem VA allocator

Fixes the BAR2 verify test (kbusVerifyBar2_GM107):
1. Removed PRAMIN window sync from emulated BAR1 - the sync was overwriting
   test data written by the driver through the vBar2 aperture. The shadow
   BAR0 is already consistent (guest writes/reads hit the same shadow location).
2. Added contiguous page allocation for golden image (alloc_pages with order
   for large allocations, falling back to individual pages).
3. Added vidmem VA allocator - ALLOC now returns GPU VAs within the emulated
   GPU's vidmem range (0x100000 - fb_size) instead of default 4GB, so the
   memmgr accepts them.

Verified: driver probes past RmInitNvDevice bus init, reaches golden image
channel allocation (progress from fn-10 FREE timeout).

0 files changed, 0 insertions, 0 deletions