Fix Wi-Fi activation issue in TM1

Fix Wi-Fi activation issue in TM1

Increased timeout to 10 seconds in case of device activation
This is required because the Mac Randomizaiton parameters need
to be set by dbus calls, to retains previous boot settings.

The timeout value is already less because wifi_manager_activate() API
has 120 seconds timeout to turn on the device, however current timeout
emits failure callback post 4 seconds, when -EINPROGRESS is returned
from device plugin.

Change-Id: I92041dbd9898f1f6b0a59f895bcd06fb5f6e1e91
Signed-off-by: Nishant Chaprana <n.chaprana@samsung.com>