clean up codes

[thehajime]

• mixture of user and kernel space headers
• duplicated prototype declaration across files
• coding style => should be linux net-next
• Werror compile

[thehajime]

checkpatch.pl and uncrustify are used and updated with 682d4921130e937dcba2f47882cf71d0e59c6c45.

more clean ups are needed

• mixture of user and kernel space headers
• duplicated prototype declaration across files
• Werror compile

[thehajime]

78b3220df199cc8168f517ca9e1631b4b25d5449 address the following issue.

• mixture of user and kernel space headers
• duplicated prototype declaration across files

the rest cleanup would be;

• Werror compile