Allow hal_usb to call getsockopt on uevent socket

am: bbdb25f6

Change-Id: Iaa08e7df1f328be666794ee12f0a138712c669fd

public/hal_usb.te

@@ -6,6 +6,7 @@ hal_attribute_hwservice(hal_usb, hal_usb_hwservice)
 
 allow hal_usb self:netlink_kobject_uevent_socket create;
 allow hal_usb self:netlink_kobject_uevent_socket setopt;
+allow hal_usb self:netlink_kobject_uevent_socket getopt;
 allow hal_usb self:netlink_kobject_uevent_socket bind;
 allow hal_usb self:netlink_kobject_uevent_socket read;
 allow hal_usb sysfs:dir open;