staging: wilc1000: rename tenuAuth_type of struct host_if_wep_attr

This patch renames tenuAuth_type of struct host_if_wep_attr to auth_type
to avoid CamelCase naming convention.

Signed-off-by: Tony Cho <tony.cho@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>