platform/x86: apple-gmux: Drop unused assignment of pnp_device_id driver data

platform/x86: apple-gmux: Drop unused assignment of pnp_device_id driver data

The driver explicitly sets the .driver_data member of struct
pnp_device_id to zero without relying on that value. Drop these unused
assignments.

While touching this array use a named initializer for .id for improved
readability and simplify the list terminator.

This patch doesn't modify the compiled array, only its representation in
source form benefits. The former was confirmed with an x86 build.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/dd6e70d3075205a1d5c1fa324db7a822f37e2349.1781101905.git.u.kleine-koenig@baylibre.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>