Sweep: Replace x-hack in grub and nanopim4 scripts

In packages/blobs/grub/09_linux_with_dtb.sh, replace all instances of the 'x-hack' with the '==' operator for comparison in bash or '=' operator in POSIX shell without the 'x' prefix.
In packages/bsp/nanopim4/nanopim4-pwm-fan.sh, replace all instances of the 'x-hack' with the '==' operator for comparison in bash or '=' operator in POSIX shell without the 'x' prefix.

Parent issue: #11

Checklist

- [X] `packages/bsp/nanopim4/nanopim4-pwm-fan.sh` ❌ Failed

• Replace all instances of the 'x-hack' with the '==' operator for comparison in bash. Ensure that the variables being compared are quoted correctly.

- [X] `packages/blobs/grub/09_linux_with_dtb.sh` ✅ Commit [`49701e5`](https://github.com/kevinlu1248/armbian-build/commit/49701e51cbf3f3c41ae7bb1e17c73816dcea8d41)

• Replace all instances of the 'x-hack' with the '==' operator for comparison in bash. Ensure that the variables being compared are quoted correctly.

Here's the PR! https://github.com/kevinlu1248/armbian-build/pull/68.

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Actions (click)

[ ] ↻ Restart Sweep

Step 1: 🔎 Searching

I found the following snippets in your repository. I will now analyze these snippets and come up with a plan.

Some code snippets I looked at (click to expand). If some file is missing from here, you can mention the path in the ticket description.

https://github.com/kevinlu1248/armbian-build/blob/e13c915efd6b71179224c064bd1c07fbbcb8b81b/packages/bsp/nanopim4/nanopim4-pwm-fan.sh#L1-L487 https://github.com/kevinlu1248/armbian-build/blob/e13c915efd6b71179224c064bd1c07fbbcb8b81b/packages/blobs/grub/09_linux_with_dtb.sh#L1-L455

Step 2: ⌨️ Coding

[X] packages/bsp/nanopim4/nanopim4-pwm-fan.sh ❌ Failed

• Replace all instances of the 'x-hack' with the '==' operator for comparison in bash. Ensure that the variables being compared are quoted correctly.
[X] packages/blobs/grub/09_linux_with_dtb.sh ✅ Commit 49701e5

• Replace all instances of the 'x-hack' with the '==' operator for comparison in bash. Ensure that the variables being compared are quoted correctly.

Step 3: 🔁 Code Review

I have finished reviewing the code for completeness. I did not find errors for sweep/replace-x-hack_6.

🎉 Latest improvements to Sweep:

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Added support for self-hosting! Check out Self-hosting Sweep to get started.
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kevinlu1248 / armbian-build