Now that fscrypt always uses blk-crypto on block-based filesystems,
there's no meaningful difference between bio.c and inline_crypt.c.
Therefore merge the two files into one named block.c.
Note: I didn't carry over bio.c's "Copyright (C) 2015, Motorola
Mobility", as none of the code that applied to remained.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260713023708.9245-17-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
