platform/x86: x86-android-tablets: enable fwnode matching of GPIO chips

platform/x86: x86-android-tablets: enable fwnode matching of GPIO chips

In order to allow GPIOLIB to match cherryview and baytrail GPIO
controllers by their firmware nodes instead of their names, we need to
attach the - currently "dangling" - existing software nodes to their
target devices dynamically.

The driver uses platform_create_bundle() and expects all required
providers to be present before it itself is probed. We know the name of
the device we're waiting for so look them up and assign the appropriate
software node as the secondary firmware node of the underlying ACPI node.

Scheduling fine-grained devres actions allows for proper teardown and
unsetting of the secondary firmware nodes.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260504-baytrail-real-swnode-v5-2-c7878b69e383@oss.qualcomm.com
[ij: added linux/bug.h include]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>