Description

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This PR adds the RT kernel config file for TI devices. If RT_KERNEL=yes is passed as an argument to ./compile.sh, a PREEMPT_RT image is built.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

Tested this on SK-AM62B.

Test 1: boot test: the board successfully booted Test 2: uname -a test: PREEMPT_RT string was present in the output, thus suggesting that its indeed an RT image Test 3: zcat /proc/config.gz | grep -i RT: Further confirmed that the PREEMPT_RT config is enabled in the running image

Checklist:

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• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] My changes generate no new warnings

cc: @glneo @Grippy98 @nmenon @sadik-smd

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