a few trivial bdevname() removals

[Christoph Hellwig <hch@xxxxxx>]

Hi Jens,

this series contains a few trivial conversion from bdevname to the %pg
format specifier.

Diffstat:
 block/bdev.c                  |    8 +++-----
 block/blk-lib.c               |    6 ++----
 drivers/block/drbd/drbd_req.c |    6 ++----
 drivers/block/pktcdvd.c       |   10 +++-------
 security/loadpin/loadpin.c    |    5 +----
 5 files changed, 11 insertions(+), 24 deletions(-)