added target LPCPC54608
added target LPCPC54608

from patch by mmahadevan108

CalSol/mbed,catiedev/mbed-os,mbedmicro/mbed,nRFMesh/mbed-os,mbedmicro/mbed,catiedev/mbed-os,betzw/mbed-os,kjbracey-arm/mbed,andcor02/mbed-os,kjbracey-arm/mbed,infinnovation/mbed-os,HeadsUpDisplayInc/mbed,HeadsUpDisplayInc/mbed,infinnovation/mbed-os,YarivCol/mbed-os,catiedev/mbed-os,nRFMesh/mbed-os,HeadsUpDisplayInc/mbed,infinnovation/mbed-os,mbedmicro/mbed,svogl/mbed-os,Archcady/mbed-os,c1728p9/mbed-os,Archcady/mbed-os,andcor02/mbed-os,mazimkhan/mbed-os,c1728p9/mbed-os,svogl/mbed-os,svogl/mbed-os,infinnovation/mbed-os,mazimkhan/mbed-os,Archcady/mbed-os,mbedmicro/mbed,karsev/mbed-os,svogl/mbed-os,betzw/mbed-os,CalSol/mbed,CalSol/mbed,betzw/mbed-os,YarivCol/mbed-os,Archcady/mbed-os,YarivCol/mbed-os,ryankurte/mbed-os,catiedev/mbed-os,HeadsUpDisplayInc/mbed,YarivCol/mbed-os,c1728p9/mbed-os,karsev/mbed-os,andcor02/mbed-os,mazimkhan/mbed-os,andcor02/mbed-os,mbedmicro/mbed,nRFMesh/mbed-os,c1728p9/mbed-os,karsev/mbed-os,nRFMesh/mbed-os,karsev/mbed-os,Archcady/mbed-os,ryankurte/mbed-os,kjbracey-arm/mbed,infinnovation/mbed-os,YarivCol/mbed-os,mazimkhan/mbed-os,CalSol/mbed,nRFMesh/mbed-os,ryankurte/mbed-os,Archcady/mbed-os,infinnovation/mbed-os,mazimkhan/mbed-os,karsev/mbed-os,mazimkhan/mbed-os,ryankurte/mbed-os,catiedev/mbed-os,ryankurte/mbed-os,catiedev/mbed-os,HeadsUpDisplayInc/mbed,CalSol/mbed,betzw/mbed-os,HeadsUpDisplayInc/mbed,svogl/mbed-os,YarivCol/mbed-os,kjbracey-arm/mbed,svogl/mbed-os,CalSol/mbed,c1728p9/mbed-os,karsev/mbed-os,ryankurte/mbed-os,andcor02/mbed-os,betzw/mbed-os,nRFMesh/mbed-os,andcor02/mbed-os,betzw/mbed-os,c1728p9/mbed-os