[PATCH 4.15 084/168] serdev: Fix serdev_uevent failure on ACPI enumerated serdev-controllers

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Hans de Goede [ Upstream commit 7d09995dcb0577b4a56aad7f2bb56f28604e8f1a ] ACPI enumerated serdev-controllers do not have an ACPI companion, the ACPI companion belongs

[PATCH 4.15 084/168] serdev: Fix serdev_uevent failure on ACPI enumerated serdev-controllers

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Hans de Goede [ Upstream commit 7d09995dcb0577b4a56aad7f2bb56f28604e8f1a ] ACPI enumerated serdev-controllers do not have an ACPI companion, the ACPI companion belongs to the serdev-device