platform/surface: omit duplicate SP11 SAM power supplies

[ooaklee]

Summary

• keep Qualcomm battmgr as the authoritative Surface Pro 11 battery and mains provider
• omit the duplicate Surface Aggregator Module battery and AC-adapter nodes from the Denali registry group
• preserve the original battery extraction as a Justin White-authored commit and carry the AC correction separately under Leon's authorship

Dependency and status

This PR targets jg/ubuntu-qcom-x1e-7.2.y directly and follows the split audio topics in review order:

• immediate review-order predecessor: ASoC: qcom: add Surface Pro 11 Golden v33 protected playback #89

There is no code dependency on #89. The two-commit branch is based directly on the release branch and does not merge #89, any other prerequisite head, the broad -sp11 staging branch, or the correction merged through #81.

• base: 032e174490d2ede881771cb368e86540b3a8818b
• head: 688be66e78fd1d04ea49eba86f46d3818f23aec2
• range: two commits, one file, two deletions

This PR is a draft until the exact branch has passed the battery/AC and non-SP11 registry checks below.

Containment

• the registry-only change affects only the ssam_node_group_sp11 software-node group
• it removes ssam_node_bat_main and ssam_node_bat_ac
• the X1E battmgr variant already registers qcom-battmgr-bat and qcom-battmgr-ac, so Denali keeps one kernel provider for each role
• no shared battery driver, Qualcomm battmgr driver, ACPI path, or other Surface registry group changes
• systems outside the Surface Pro 11 Denali group retain their existing SAM battery and AC nodes

This follows upstream commit 0488073a6c84, which removes both SAM nodes on Surface Laptop 7 because Qualcomm battmgr otherwise creates duplicate battery and mains power supplies.

Provenance

The first focused commit preserves @kyjus25 (Justin White) as author with his source author date and original Signed-off-by: Justin White <kyjus25@gmail.com>. Leon Silcott's authorized Signed-off-by: Leon Silcott <leon@boasi.io> is appended for the rewritten submission.

That commit links to the original combined touchscreen-and-battery change 3fc7c5249f4a, keeping Justin's contribution visible. The second commit is authored and signed off by Leon and links to the upstream dual-provider precedent; it does not broaden Justin's authored rewrite.

Validation completed at the exact head

• git diff --check 032e174490d2ede881771cb368e86540b3a8818b..688be66e78fd1d04ea49eba86f46d3818f23aec2: pass
• strict per-commit checkpatch: 0 errors, 0 warnings, 0 checks on both commits
• ARM64 ubuntu_x1e_defconfig W=1 build of surface_aggregator_registry.o with 10 jobs: pass
• exact-diff audit confirms that only the SP11 battery and AC nodes are omitted: pass
• registry-group audit confirms that every non-SP11 Surface model retains its existing SAM battery and AC nodes: pass
• public commit/body leakage scan: pass

Hardware checks still required

• boot this exact branch on both the X1E/OLED and X1P/LCD Surface Pro 11 variants, or keep the untested variant disclosed before ready
• confirm /sys/class/power_supply/ contains qcom-battmgr-bat and qcom-battmgr-ac but no Denali BAT1 or ADP1
• verify battery percentage, charge/discharge state, voltage, current, and charge-rate updates
• connect and disconnect external power repeatedly and verify qcom-battmgr-ac/online and the battery charge state follow it without a second mains interface
• verify suspend/resume and reboot do not reintroduce duplicate battery devices or stale power-supply state
• exercise a non-SP11 Surface that uses the SAM battery node and confirm its battery and AC devices remain present