drm/xe: Add SVM debug

drm/xe: Add SVM debug

Add some useful SVM debug logging fro SVM range which prints the range's
state.

v2:
 - Update logging with latest structure layout
v3:
 - Better commit message (Thomas)
 - New range structure (Thomas)
 - s/COLLECTOT/s/COLLECTOR (Thomas)
v4:
 - Drop partial evict message (Thomas)
 - Use %p for pointers print (Thomas)
v6:
 - Cast dma_addr to u64 (CI)
 - Only compile if CONFIG_DRM_GPUSVM selected (CI, Lucas)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-30-matthew.brost@intel.com