HID: multitouch: make mt_set_mode() less cryptic

HID: multitouch: make mt_set_mode() less cryptic

mt_set_mode() accepts 2 boolean switches indicating whether the device
(if it follows Windows Precision Touchpad specification) should report
hardware buttons and/or surface contacts. For a casual reader it is
completely not clear, as they look at the call site, which exact mode
is being requested.

Define report_mode enum and change mt_set_mode() to accept is as
an argument instead. This allows to write:

	mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);

or

	mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_BUTTONS);

which makes intent much more clear.

Reviewed-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://patch.msgid.link/Zx_hBvg5Qa3KU3ta@google.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>