Fix the following kernel-doc warning:

block/partitions/efi.c:685: warning: wrong kernel-doc identifier on line:
 * efi_partition(struct parsed_partitions *state)

Cc: Alexander Viro <viro@math.psu.edu>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20210513171708.8391-1-bvanassche@acm.orgSigned-off-by: NJens Axboe <axboe@kernel.dk>