Auto determine core clock

[chungshien-chai]

<Put hold on while waiting RIC API be updated - see https://rapidsilicon.atlassian.net/browse/VIRGO-384>

Together with os-fpga/FOEDAG#1673 and os-fpga/Raptor#1923, this changes auto-determine the needed core-clock. All the clock input is treated as fast clock

Testing done:

• Port all these 4 changes (3 os-fpga repo + RIC API update) into latest NS Raptor
• Run test/batch, test/batch_gen2 and test/batch_gen3