pci.h: move include into own wrapper

Split the include of hwaccess and libpci. There is no need to have pci.h
included in hwaccess.

Change-Id: Ibf00356f0ef5cc92e0ec99f8fe5cdda56f47b166
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/58883
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/72264
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/amd_imc.c b/amd_imc.c
index a692199..d995d4d 100644
--- a/amd_imc.c
+++ b/amd_imc.c
@@ -19,6 +19,7 @@
 #include "programmer.h"
 #include "hwaccess.h"
 #include "spi.h"
+#include "platform/pci.h"
 
 /* same as serverengines */
 static void enter_conf_mode_ec(uint16_t port)