pinctrl: cherryview: fix Strago DMI workaround

Well, hopefully 3rd time is a charm. We tried making that check
DMI_BIOS_VERSION and DMI_BOARD_VERSION, but the real one is
DMI_PRODUCT_VERSION.

Fixes: 86c5dd68 ("pinctrl: cherryview: limit Strago DMI workarounds to version 1.0")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197953
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1631930


Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>