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/munices_defconfig b/configs/munices_defconfig
index 169fc93..f32bbad 100644
--- a/configs/munices_defconfig
+++ b/configs/munices_defconfig
@@ -6,4 +6,5 @@
 CONFIG_CMD_ASKENV=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_PING=y
+# CONFIG_PCI is not set
 CONFIG_OF_LIBFDT=y