README.uefi: update list of missing functionality

Update the list of missing functionality for boottime and runtime services.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

doc/README.uefi

@@ -299,13 +299,18 @@ This driver is only available if U-Boot is configured with
     CONFIG_BLK=y
     CONFIG_PARTITIONS=y
 
-## TODOs as of U-Boot 2018.03
+## TODOs as of U-Boot 2018.07
 
 * unimplemented or incompletely implemented boot services
   * Exit - call unload function, unload applications only
-  * ReinstallProtocolInterface
+  * ProtocolRegisterNotify
   * UnloadImage
 
+* unimplemented or incompletely implemented runtime services
+  * SetVariable() ignores attribute EFI_VARIABLE_APPEND_WRITE
+  * GetNextVariableName is not implemented
+  * QueryVariableInfo is not implemented
+
 * unimplemented events
   * EVT_RUNTIME
   * EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE