PCUIF_Types: add message type PCU_IF_MSG_E1_CCU_IND

Even though we do not need it right now, let's add the message type
PCU_IF_MSG_E1_CCU_IND. This message type has been added to the PCUIF
protocol recently.

Related: OS#5927
Change-Id: Ib6482d88e924f285658b933f32be42a4f63bee71
1 file changed