[REGRESSION] stable-rc/linux-6.18.y: (build)call to undeclared function 'huge_ptep_get'; ISO C99 and later do n...

New build issue found on stable-rc/linux-6.18.y:

---
call to undeclared function 'huge_ptep_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] in mm/page_vma_mapped.o (mm/page_vma_mapped.c) [logspec:kbuild,kbuild.compiler.error]
---

Log excerpt:
=====================================================
/tmp/kci/linux/mm/page_vma_mapped.c:110:11: error: call to undeclared function 'huge_ptep_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  110 |                 ptent = huge_ptep_get(pvmw->vma->vm_mm, pvmw->address,
      |                         ^
1 error generated.

=====================================================

When fixing this issue, please attribute this report according to the
patch submission rules:

Reported-by: kernelci.org bot <redacted>

For complete logs and details about the environment used, see the issue
on the KernelCI dashboard:

- dashboard: https://d.kernelci.org/i/maestro:cc8e3250a79e15d3b98cd0b7eee6825df4d6d4a0
- giturl: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
- commit HEAD:  96ff57c9007ff0391c80864ebe06496d592e3b02

# Builds where the incident occurred:

## defconfig+allmodconfig+CONFIG_FRAME_WARN=2048 on (arm):
- compiler: clang-21
- config: None
- dashboard: https://d.kernelci.org/build/maestro:6a9a5fe6e41d7f97d6fd77bf

## multi_v7_defconfig on (arm):
- compiler: clang-21
- config: None
- dashboard: https://d.kernelci.org/build/maestro:6a9a5fe2e41d7f97d6fd7777

#kernelci issue maestro:cc8e3250a79e15d3b98cd0b7eee6825df4d6d4a0

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