thermal/drivers/clock_cooling: Include export.h

It is preferrable to include export.h when you are using EXPORT_SYMBOL
family of macros.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/25f16415ab7b7587a052f1bce4133da318d58192.1589199124.git.amit.kucheria@linaro.org
1 file changed