mfd: tqmx86: Fix typo in "platform"

Rename variable from "ocores_platfom_data" to "ocores_platform_data".

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Lee Jones <lee.jones@linaro.org>