Makefile: remove CPPFLAGS and LDFLAGS to default directories

All CPPFLAGS and LDFLAGS for dependencies are handled by pkg-config

Change-Id: Ib7c11a0c8a7918562256480c4be0c95355f981c5
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/61526
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/72293
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/platform/pci.h b/platform/pci.h
index fdb0f48..2a524b2 100644
--- a/platform/pci.h
+++ b/platform/pci.h
@@ -15,7 +15,7 @@
 #define index shadow_workaround_index
 
 #if defined (PCIUTILS_PCI_H)
-#include <pciutils/pci.h>
+#include <pci.h>
 #else
 #include <pci/pci.h>
 #endif