drm/vc4: Fix spelling mistake "mmaping" -> "mmapping"

There are a couple of spelling mistakes in DRM_DEBUG messages. Fix them.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20221021084035.65367-1-colin.i.king@gmail.com

drivers/gpu/drm/vc4/vc4_bo.c

@@ -736,12 +736,12 @@ static int vc4_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct
 	struct vc4_bo *bo = to_vc4_bo(obj);
 
 	if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) {
-		DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n");
+		DRM_DEBUG("mmapping of shader BOs for writing not allowed.\n");
 		return -EINVAL;
 	}
 
 	if (bo->madv != VC4_MADV_WILLNEED) {
-		DRM_DEBUG("mmaping of %s BO not allowed\n",
+		DRM_DEBUG("mmapping of %s BO not allowed\n",
 			  bo->madv == VC4_MADV_DONTNEED ?
 			  "purgeable" : "purged");
 		return -EINVAL;