iomap: convert to SPDX identifier

Use SPDX-License-Identifier instead of GPLv2 boilerplate.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2019-04-28 08:34:02 -07:00 • committed by Darrick J. Wong
commit 73ce6abae5