HID: do not inline some hid_hw_ functions

We don't gain much by having them as inline, and it
actually prevents us to attach a probe to those helpers.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20211202095334.14399-5-benjamin.tissoires@redhat.com