[PATCH] ARM: Add further explaination for clk_get()

/**

 * clk_get - lookup and obtain a reference to a clock producer.

 * @dev: device for clock "consumer"

 * @id: device ID

 * @id: clock comsumer ID

 *

 * Returns a struct clk corresponding to the clock producer, or

 * valid IS_ERR() condition containing errno.

 * valid IS_ERR() condition containing errno.  The implementation

 * uses @dev and @id to determine the clock consumer, and thereby

 * the clock producer.  (IOW, @id may be identical strings, but

 * clk_get may return different clock producers depending on @dev.)

 */

struct clk *clk_get(struct device *dev, const char *id);