drm/i915/selftests: Prepare coherency tests for obj->mm.lock removal.

Straightforward conversion, just convert a bunch of calls to
unlocked versions.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-44-maarten.lankhorst@linux.intel.com

drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c

@@ -160,7 +160,7 @@ static int wc_set(struct context *ctx, unsigned long offset, u32 v)
 	if (err)
 		return err;
 
-	map = i915_gem_object_pin_map(ctx->obj, I915_MAP_WC);
+	map = i915_gem_object_pin_map_unlocked(ctx->obj, I915_MAP_WC);
 	if (IS_ERR(map))
 		return PTR_ERR(map);
 
@@ -183,7 +183,7 @@ static int wc_get(struct context *ctx, unsigned long offset, u32 *v)
 	if (err)
 		return err;
 
-	map = i915_gem_object_pin_map(ctx->obj, I915_MAP_WC);
+	map = i915_gem_object_pin_map_unlocked(ctx->obj, I915_MAP_WC);
 	if (IS_ERR(map))
 		return PTR_ERR(map);