p2a: add initial p2a support (empty)

Add initial pci-to-ahb host-side support, by just listing the aspeed pci
devices.

Tested: This dumped the aspeed PCI device listed on my test platform.
Change-Id: I6dc4aeb3b38ec2f95bfd716bda2d8eb4786328ab
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/tools/Makefile.am b/tools/Makefile.am
index d86d365..7d07434 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -12,4 +12,6 @@
 	bt.cpp \
 	lpc.cpp \
 	io.cpp \
+	pci.cpp \
+	p2a.cpp \
 	../internal/sys.cpp