drm/i915: Fix GuC documentation links

We moved GuC related files to new location but we missed to update
.rst file with links.

References: commit 0f261b24 ("drm/i915/uc: move GuC and HuC files under gt/uc/")
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190725141308.24660-1-michal.wajdeczko@intel.com

Documentation/gpu/i915.rst

@@ -433,28 +433,28 @@ GuC
 GuC-specific firmware loader
 ----------------------------
 
-.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fw.c
+.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
    :internal:
 
 GuC-based command submission
 ----------------------------
 
-.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_submission.c
+.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
    :doc: GuC-based command submission
 
-.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_submission.c
+.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
    :internal:
 
 GuC Firmware Layout
 -------------------
 
-.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fwif.h
+.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
    :doc: GuC Firmware Layout
 
 GuC Address Space
 -----------------
 
-.. kernel-doc:: drivers/gpu/drm/i915/intel_guc.c
+.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc.c
    :doc: GuC Address Space
 
 Tracing