[BUG] Wrong download URL for T210

[enetkilifatih]

Describe the issue getKernelSources.sh script selects t186 url for t210 boards.

Which version of Ubuntu on the Host machine Ubuntu version: 20.04.1

What version of L4T/JetPack L4T/JetPack version: L4T 32.6.1 / JetPack 4.6

Which Jetson Jetson: Nano

To Reproduce Steps to reproduce the behavior:

• Use Jetson Nano, Nano 2GB or TX1
• Clone buildKernelAndModules repository
• Run ./getKernelSources.sh

Expected behavior getKernelSources.sh script to select right download url is expected.