Remove blacklisted structure names

- Those were important structures in Linux
  They deserve to be indexed.

- This will require re-indexing, so this will take a bit
  of time to be fixed in the database

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>

lib.py

@@ -126,7 +126,6 @@ blacklist = (
     b'next',
     b'ctx',
     b'event',
-    b'mddev',
     b'q',
     b'attr',
     b'cpu',
@@ -144,12 +143,10 @@ blacklist = (
     b'NULL',
     b'sizeof',
     b'status',
-    b'device',
     b'adapter',
     b'inline',
     b'offset',
     b'failed',
-    b'dentry',
     b'retval',
     b'buffer',
     b'length',