drm/xe/guc: Normalize error messages with %#x

One of the messages was printed without 0x prefix, so it was not clear
if it was decimal or hex: make sure to add the prefix by using %#x.
While at it, normalize the other messages in the same function to follow
the same pattern.

Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/20230611222447.2837573-3-lucas.demarchi@intel.com


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