drm/i915/gem: Fix a lockdep warning the __i915_gem_is_lmem() function

Somehow we managed to invert the test for i915_gem_object_evictable(),
which causes a warning in DG1 BAT, igt@debugfs_test@read_all_entries.

Fix the lock check to only warn if the object *is* indeed evictable and
not protected from eviction by fences.

Cc: Matthew Brost <matthew.brost@intel.com>
Fixes: 91160c83 ("drm/i915: Take pinning into account in __i915_gem_object_is_lmem")
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210922083807.888206-2-thomas.hellstrom@linux.intel.com

drivers/gpu/drm/i915/gem/i915_gem_lmem.c

@@ -67,7 +67,7 @@ bool __i915_gem_object_is_lmem(struct drm_i915_gem_object *obj)
 
 #ifdef CONFIG_LOCKDEP
 	GEM_WARN_ON(dma_resv_test_signaled(obj->base.resv, true) &&
-		    !i915_gem_object_evictable(obj));
+		    i915_gem_object_evictable(obj));
 #endif
 	return mr && (mr->type == INTEL_MEMORY_LOCAL ||
 		      mr->type == INTEL_MEMORY_STOLEN_LOCAL);