Staging:wlags49_h25: Fix sparse warning for static declarations

This patch fixes the Sparse Warnings "symbol
was not declared. Should it be static?"

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>