build: switch back to 80 char checkpatch config

The code base is mostly in 80 character line length written. Let's keep
it there as it looks odd the different styles and nothing really is
gained by the 100 chars. If you can't write it properly in 80 then 100
will not be enough anyway.

Signed-off-by: Daniel Wagner <[email protected]>

Author: igaw

.checkpatch.conf

@@ -4,15 +4,14 @@
 # This isn't actually a Linux kernel tree
 --no-tree
 
---max-line-length=100
+--max-line-length=80
 
 --ignore EMAIL_SUBJECT
 
 # FILE_PATH_CHANGES reports this kind of message:
 # "added, moved or deleted file(s), does MAINTAINERS need updating?"
 --ignore FILE_PATH_CHANGES
 
-
 # Commit messages might contain a Gerrit Change-Id.
 --ignore GERRIT_CHANGE_ID