Initialize the HAL ticker on first read
Initialize the HAL ticker on first read

Initialize the ticker on the first call to ticker_read* if the
ticker has not been initialized already.

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