Adjust kernel-doc notation to prevent warnings when using -Wall.

dimm_devs.c:59: warning: Function parameter or member 'ndd' not described in 'nvdimm_init_nsarea'
dimm_devs.c:59: warning: Excess function parameter 'nvdimm' description in 'nvdimm_init_nsarea'
dimm_devs.c:59: warning: No description found for return value of 'nvdimm_init_nsarea'
dimm_devs.c:728: warning: No description found for return value of 'nd_pmem_max_contiguous_dpa'
dimm_devs.c:773: warning: No description found for return value of 'nd_pmem_available_dpa'
dimm_devs.c:844: warning: Function parameter or member 'ndd' not described in 'nvdimm_allocated_dpa'
dimm_devs.c:844: warning: Excess function parameter 'nvdimm' description in 'nvdimm_allocated_dpa'
dimm_devs.c:844: warning: No description found for return value of 'nvdimm_allocated_dpa'

[iweiny: drop ND_CMD_* status code]
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc:  <nvdimm@lists.linux.dev>
Link: https://lore.kernel.org/r/20231207210545.24056-2-rdunlap@infradead.orgSigned-off-by: Ira Weiny <ira.weiny@intel.com>