config: add ahci for pci capable machines

This patch enables AHCI for all machines supporting PCI.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

default-configs/pci.mak

@@ -13,3 +13,4 @@ CONFIG_E1000_PCI=y
 CONFIG_IDE_CORE=y
 CONFIG_IDE_QDEV=y
 CONFIG_IDE_PCI=y
+CONFIG_AHCI=y