drm/xe: Remove double new lines in devcoredump

Right now devcoredump has a new line between '**** GuC CT ****' and
'H2G CTB (all sizes in DW):' while other sections don't have.

v2: remove double new line after IPEHR

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Maarten Lankhorst <dev@lankhorst.se>
Cc: Stuart Summers <stuart.summers@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240123204454.246788-1-jose.souza@intel.com