Merge tag 'efi-2026-10-rc1' of https://git.u-boot-project.org/u-boot/custodians/u...

Pull request efi-2026-10-rc1

CI: https://git.u-boot-project.org/u-boot/custodians/u-boot-efi/-/pipelines/648

Documentation:

* board: renesas: Document SH/Aarch32/Aarch64 toolchain setup
* board: renesas: Document Aarch32 toolchain setup in RZ/N1
* board: renesas: Document Renesas R-Car Gen3 H3/M3-W/M3-N Salvator-X(S) board
* board: renesas: Document Renesas R-Car Gen3 H3/M3-W/M3-N ULCB board
* board: renesas: Document Renesas R-Car Gen3 M3Le Geist board
* board: renesas: Document Renesas R-Car Gen3 E3 Ebisu board
* board: renesas: Document Renesas R-Car Gen3 D3 Draak board
* board: renesas: Document Retronix R-Car Gen4 V4H Sparrow Hawk board
* board: renesas: Document Renesas R-Car Gen5 X5H Ironhide board
* board: renesas: Update Renesas generic build section
* board: renesas: Convert Renesas board support table to grid table
* boards: amlogic: update documentation for Beelink GT1 Ultimate
* CONTRIBUTE: use internal link instead of hardcoded external URL
* CONTRIBUTE: tell people reviewing *is* contributing
* CONTRIBUTE: explicitly list tests and documentation as welcome contributions

UEFI:

* fix building with CONFIG_EFI_VARIABLES_PRESEED=y
* fix buffer overrun in efi_sigstore_parse_siglist
* Correctly count the size on DTB measurements
* Change the return values if a TPM is missing during GetEventLog
* Measure secure boot variables in the correct PCR if DeployedMode is set
* fix missing EFI_EXIT in efi_disconnect_controller
* efi_selftest: free handles on teardown()
* efi_selftest: test block io revision and pointers

Others:

* qfw: fix RSDP ACPI table ext_checksum computation