SM8750: KONKR pocket fit elite stick LED effects

[slaide]

Summary

• What is the goal of this PR? (e.g. Bump up an emulator version, implement a new feature. )

the konkr pocket fit elite supports different modes to drive the stick leds. this pr exposes those as a simple linux interface. es only supports "static" mode, where a solid color is shown, which works unchanged.

Testing

• How was this tested? (e.g. Built and tested on specific devices, manual testing steps, URLs for CI/CD build artifacts.)
• Test results: (e.g. Screenshots, logs, performance metrics if applicable.)

installed on my own device, works.

can be used like this (but again, existing es controls for static color also work)

L=/sys/class/leds/konkr:rgb:joysticks

echo breath 0 128 255 > $L/effect   # pulses with the target colour, ignores $L/brightness
echo rainbow          > $L/effect   # "google breath": cycles a colour wheel
                                    #   while pulsing, non-configurable
echo static           > $L/effect   # back to normal, colour via the standard
                                    #   multicolor-LED attrs below

echo 255 0 0 > $L/multi_intensity   # R G B order, modified by $L/brightness
echo 200     > $L/brightness        # scales RBG; 0 = off
cat $L/effect                       # reads back the active mode + its args

Additional Context

• Add any other information that might be helpful for the reviewer (e.g., performance implications, potential risks, specific areas to focus on.)

feel free to reject this, since it technically doesnt add or fix anything, but with all the work i have done on this device, this is code i have anyway, so.. why not pr.

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AI Usage

While ROCKNIX doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? YES | PARTIALLY | NO

yes, heavy use of claude

[loki666]

I guess we can take that after august release