Bug fix: Fix section mismatch problem of release_firmware_map_entry().

Bug fix: Fix section mismatch problem of release_firmware_map_entry().

The function release_firmware_map_entry() references the function
__meminit firmware_map_find_entry_in_list(). So it should also have
__meminit.

And since the firmware_map_entry->kobj is initialized with memmap_ktype,
the memmap_ktype should also be prefixed by __refdata.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>