MFC 241130:

MFC 241130:
Rename the module for 'device enc' to "if_enc" to avoid conflicting with
the CAM "enc" peripheral (part of ses(4)).  Previously the two modules
used the same name, so only one was included in a linked kernel causing
enc0 to not be created if you added IPSEC to GENERIC.  The new module
name follows the pattern of other network interfaces (e.g. "if_loop").

git-svn-id: svn://svn.freebsd.org/base/stable/9@247424 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f