drm/amdgpu/gfx10: replace BUG_ON() with WARN_ON()

• azl3 kernel 6.6.150.1-1 on Azure Linux 3.0

Separate remediation guidance was not included in the collected bulletin.

1. Aug 11, 2026 at 1:10 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Aug 20, 2026 at 6:50 PM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Oct 28, 2026 at 3:45 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.