[GCI adapter]: use real calculated size of remanent data to indicated on GCI startup

When indicating the GCI adapter properties to the GCI application currently a hard coded magic number is given as size of remanent data.

The value does not match the data size used in HIL_STORE_REMANENT_DATA_IND. By definition of GCI the size in HIL_STORE_REMANENT_DATA_IND shall be exactly the same as used in HIL_GCI_COMP_INTERFACE_T.tInfo.ulRemanentDataSize.

If the values are not equal storing of remanent data is not working in GCI applications.

Therefore using a hard coded value at one place in source code but a calculated one at a different place in code is bad and needs to be harmonized.