selinux: sparse fix: fix warnings in netlink code

Fix sparse warnings in SELinux Netlink code.

Signed-off-by: James Morris <jmorris@namei.org>

diff --cc security/selinux/hooks.c
Simple merge

diff --cc security/selinux/include/security.h
Simple merge

diff --cc security/selinux/netlink.c
Simple merge

diff --cc security/selinux/nlmsgtab.c
Simple merge

diff --cc security/selinux/selinuxfs.c
Simple merge

diff --cc security/selinux/ss/services.c
Simple merge