PM: QoS: Export dev_pm_qos_read_value

Export the function dev_pm_qos_read_value(). Most other functions
mentioned in Documentation/power/pm_qos_interface.rst are already
exported, so export this one as well.

This function will be used to read the resume latency in a driver that
can also be compiled as a module.

Signed-off-by: Markus Schneider-Pargmann <[email protected]>
Tested-by: Kevin Hilman <[email protected]>
Tested-by: Roger Quadros <[email protected]>
Reviewed-by: Dhruva Gole <[email protected]>
Reviewed-by: Kevin Hilman <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Link: https://lore.kernel.org/lkml/CAJZ5v0g1Ri_wKYppomE6RXqcZXRnX7bLOPMtsQaao0uchSfE9A@mail.gmail.com/
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Nishanth Menon <[email protected]>

Author: scosu

drivers/base/power/qos.c

@@ -137,6 +137,7 @@ s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(dev_pm_qos_read_value);
 
 /**
  * apply_constraint - Add/modify/remove device PM QoS request.