driver: platform: fix documentation for platform_get_irq_byname

Probably due to copy&paste, some stuff was simply forgotten.

Signed-off-by: Wolfram Sang <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/base/platform.c

···
 EXPORT_SYMBOL_GPL(platform_get_resource_byname);
 
 /**
- * platform_get_irq - get an IRQ for a device
+ * platform_get_irq_byname - get an IRQ for a device by name
  * @dev: platform device
  * @name: IRQ name
  */