Break out RTC kernel modules

To: [email protected]
Signed-off-by: Linus Walleij <[email protected]>
---
Changes in v2:
- EDITME: describe what is new in this series revision.
- EDITME: use bulletpoints and terse descriptions.
- Link to v1: https://lore.kernel.org/r/20240522-kernel-modules-v1-1-bd91c146a3d0@linaro.org

--- b4-submit-tracking ---
# This section is used internally by b4 prep for tracking purposes.
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  "series": {
    "revision": 2,
    "change-id": "20240522-kernel-modules-90704f462481",
    "prefixes": [],
    "history": {
      "v1": [
        "20240522-kernel-modules-v1-1-bd91c146a3d0@linaro.org"
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