Sweep: Remove x-hack from grub and bsp packages

In ./packages/blobs/grub/09_linux_with_dtb.sh, replace all instances of the 'x-hack' with a direct comparison.
In ./packages/bsp/nanopim4/nanopim4-pwm-fan.sh, replace all instances of the 'x-hack' with a direct comparison.

Parent issue: #11

Checklist

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

• Replace all instances of 'x-hack' comparisons with direct comparisons. For example, change lines like '[ "x${variable}" = "xvalue" ]' to '[[ "${variable}" == "value" ]]'.

- [X] `packages/blobs/grub/09_linux_with_dtb.sh` ✅ Commit [`d639186`](https://github.com/kevinlu1248/armbian-build/commit/d639186366f3dde700142e75f71963fcc1d0a6bd)

• Replace all instances of 'x-hack' comparisons with direct comparisons. For example, change lines like '[ "x${variable}" = "xvalue" ]' to '[[ "${variable}" == "value" ]]'.

Here's the PR! https://github.com/kevinlu1248/armbian-build/pull/32.

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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 'x-hack' comparisons with direct comparisons. For example, change lines like '[ "x${variable}" = "xvalue" ]' to '[[ "${variable}" == "value" ]]'.
[X] packages/blobs/grub/09_linux_with_dtb.sh ✅ Commit d639186

• Replace all instances of 'x-hack' comparisons with direct comparisons. For example, change lines like '[ "x${variable}" = "xvalue" ]' to '[[ "${variable}" == "value" ]]'.

Step 3: 🔁 Code Review

I have finished reviewing the code for completeness. I did not find errors for sweep/remove-x-hack_1.

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kevinlu1248 / armbian-build