drm/i915: move region_lmem under gt

Device local-memory should be thought of as part the GT, which means it
should also sit under gt/.

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20210112164300.356524-1-matthew.auld@intel.com

drivers/gpu/drm/i915/Makefile

@@ -110,6 +110,7 @@ gt-y += \
 	gt/intel_mocs.o \
 	gt/intel_ppgtt.o \
 	gt/intel_rc6.o \
+	gt/intel_region_lmem.o \
 	gt/intel_renderstate.o \
 	gt/intel_reset.o \
 	gt/intel_ring.o \
@@ -170,7 +171,6 @@ i915-y += \
 	  i915_scheduler.o \
 	  i915_trace_points.o \
 	  i915_vma.o \
-	  intel_region_lmem.o \
 	  intel_wopcm.o
 
 # general-purpose microcontroller (GuC) support

drivers/gpu/drm/i915/i915_drv.h

@@ -81,6 +81,7 @@
 
 #include "gt/intel_engine.h"
 #include "gt/intel_gt_types.h"
+#include "gt/intel_region_lmem.h"
 #include "gt/intel_workarounds.h"
 #include "gt/uc/intel_uc.h"
 
@@ -102,7 +103,6 @@
 #include "i915_vma.h"
 #include "i915_irq.h"
 
-#include "intel_region_lmem.h"
 
 /* General customization:
  */