[qca-nss-clients] Fix vlan-mgr compile error

- Include <linux/module.h>
- Fixed unused variable warnings when PPE support
  is not enabled.

Change-Id: Ia2574b9dfb7c61340e6b96be9488d92671c40d8f
Signed-off-by: Chandru Neginahal <cnegin@codeaurora.org>
1 file changed