drm/xe/uc: Remove static from loop variable

The `entries` variable is used to loop through the array - it's supposed
to be const, but not static.

Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250307-xe-per-gt-fw-v1-1-459574d76400@intel.com


Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>