product/n1sdp: set CCIX speed to GEN3 to work with interposer C2C setup
Created by: jagadeeshujja
Set CCIX speed to GEN3 to work with interposer C2C setup In this use case set downstream/upstream port transmitter preset value to 4.
Signed-off-by: Jagadeesh Ujja jagadeesh.ujja@arm.com Change-Id: I635566574babbb7591b5bba97105f76f1f8e550a