aoe: Add forgotten NULL at end of attribute list in aoeblk.c
This caused the system to stall when the aoe module was loaded. The
error was introduced in commit 4ca5224f3ea4779054d96e885ca9b3980801ce13
Signed-off-by: Dennis Stosberg <dennis@stosberg.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>