platform/x86: silicom-platform: Fix spelling mistake "platfomr" -> "platform"

There is a spelling mistake in a literal string. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231215112746.13752-1-colin.i.king@gmail.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>