iio:cros_ec_sensors: Fix a typo in a fixup of a missing select in Kconfig.

Would have merged this into the original patch as a fixup but I've already
pushed that out as an immutable branch for others to use so it'll have
to be a separate patch.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
1 file changed