drivers/pci/Kconfig: Add PCI

Add 'PCI' as a menu option and migrate all existing users.

Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
diff --git a/configs/integratorap_cm720t_defconfig b/configs/integratorap_cm720t_defconfig
index 861e231..7ddb47d 100644
--- a/configs/integratorap_cm720t_defconfig
+++ b/configs/integratorap_cm720t_defconfig
@@ -8,4 +8,5 @@
 CONFIG_SYS_PROMPT="Integrator-AP # "
 CONFIG_CMD_ARMFLASH=y
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_PCI=y
 CONFIG_OF_LIBFDT=y