HID: asus: Add depends on USB_HID to HID_ASUS Kconfig option

Since commit 4bc43a42 ("HID: asus: Add
hid_is_using_ll_driver(usb_hid_driver) check") the hid-asus.c depends
on the usb_hid_driver symbol. Add a depends on USB_HID to Kconfig to
fix missing symbols errors in hid-asus when USB_HID is not enabled.

Fixes: 4bc43a42

 ("HID: asus: Add hid_is_using_ll_driver(usb_hid_driver) check")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>