arm64: GENERIC-MMCCAM: Fix build and module depend

Fix the build of the GENERIC-MMCCAM kernel config after the sdhci_xenon
driver was commited.
While here correct sdhci_fdt and tegra_sdhci, even with MMCCAM they do
need to depend on sdhci(4)

Reported by: Reshetnikov Dmitriy <genserg@hotmail.com>
Approved by: re (kib)
Sponsored by: Rubicon Communications, LLC ("NetGate")