efi_driver: comment struct efi_driver_ops

Provide description for struct efi_driver_ops.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

include/efi_driver.h

@@ -13,6 +13,18 @@
 #include <dm.h>
 #include <efi_loader.h>
 
+/*
+ * Operations supported by an EFI driver with respect to the EFI uclass
+ *
+ * @protocol		The GUID of the protocol which is consumed by the
+ *			driver. This GUID is used by the EFI uclass in the
+ *			supports() and start() methods of the
+ *			EFI_DRIVER_BINDING_PROTOCOL.
+ * @child_protocol	Protocol supported by the child handles generated by
+ *			the EFI driver.
+ * @bind		Function called by the EFI uclass to attach the
+ *			driver to EFI driver to a handle.
+ */
 struct efi_driver_ops {
 	const efi_guid_t *protocol;
 	const efi_guid_t *child_protocol;