Fix kernel-doc warnings in ttm_range_manager.c:

drivers/gpu/drm/ttm/ttm_range_manager.c:144: warning: expecting prototype for ttm_range_man_init(). Prototype was for ttm_range_man_init_nocheck() instead
drivers/gpu/drm/ttm/ttm_range_manager.c:178: warning: expecting prototype for ttm_range_man_fini(). Prototype was for ttm_range_man_fini_nocheck() instead

Also fix subsequent warnings from scripts/kernel-doc.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20211121155453.29736-1-rdunlap@infradead.orgSigned-off-by: Christian König <christian.koenig@amd.com>