spl: ahci: Fix dependency for SPL_AHCI_PCI

The option SPL_SATA_SUPPORT is renamed to SPL_SATA. Fix the option
name.

Fixes: 73059529 ("ata: ahci-pci: Add new option CONFIG_SPL_AHCI_PCI")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Acked-by: Pali Rohár <pali@kernel.org>