drm/i915/region: make intel_region_map static

There are no users outside of intel_memory_region.c.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20210112170429.27619-1-jani.nikula@intel.com

drivers/gpu/drm/i915/intel_memory_region.c

@@ -10,7 +10,7 @@
 #define REGION_MAP(type, inst) \
 	BIT((type) + INTEL_MEMORY_TYPE_SHIFT) | BIT(inst)
 
-const u32 intel_region_map[] = {
+static const u32 intel_region_map[] = {
 	[INTEL_REGION_SMEM] = REGION_MAP(INTEL_MEMORY_SYSTEM, 0),
 	[INTEL_REGION_LMEM] = REGION_MAP(INTEL_MEMORY_LOCAL, 0),
 	[INTEL_REGION_STOLEN] = REGION_MAP(INTEL_MEMORY_STOLEN, 0),

drivers/gpu/drm/i915/intel_memory_region.h

@@ -51,11 +51,6 @@ enum intel_region_id {
 	for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \
 		for_each_if((mr) = (i915)->mm.regions[id])
 
-/**
- * Memory regions encoded as type | instance
- */
-extern const u32 intel_region_map[];
-
 struct intel_memory_region_ops {
 	unsigned int flags;