platform/x86: lg-laptop: Improve WMAB control method support

The WMAB ACPI control method can return two kinds of results:

1. A ACPI integer containing the result.
2. A ACPI buffer containing the result and an error code.

Devices implement one of those mechanisms, but not both. Extend
lg_wmab() to abstract away the differences between both mechanisms
to fix keyboard backlight support on newer devices.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260708195553.7762-5-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

0 files changed, 0 insertions, 0 deletions