PCUIF_Types: rename PCU_IF_SAPI_AGCH_DT to PCU_IF_SAPI_PCH_DT

The SAPI PCU_IF_SAPI_AGCH_DT has been renamed to PCU_IF_SAP_PCH_DT in
the recent pcuif_proto.h version since the IMMEDIATE ASSIGNMENT what it
is used for is sent on the PCH not on the AGCH.

The SAPI constant is currently not used in the TTCN3 testsuite, but it
will soon be used when we introduce support for the recent PCUIF which
will then use the direct TLLI (DT) method.

Related: OS#5927
Change-Id: Ifc09067bcb0f9f422ca429313fa09fea081dc316
1 file changed