PCI: Guard pci.h with CONFIG_PCI

Adding PCI functions for romstage in pci.h breaks ARMv7 build without
this. Also fix two related includes to use pci_def.h instead.

Change-Id: I5291eaf6ddf5a584f50af29cf791d2ca4d9caa71
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5199
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/include/device/pci.h

@@ -15,6 +15,8 @@
 #ifndef PCI_H
 #define PCI_H
 
+#if CONFIG_PCI
+
 #include <stdint.h>
 #include <stddef.h>
 #include <arch/rules.h>
@@ -98,4 +100,7 @@ static inline const struct pci_operations *ops_pci(device_t dev)
 }
 
 #endif /* ! __SIMPLE_DEVICE__ */
+
+#endif /* CONFIG_PCI */
+
 #endif /* PCI_H */