tools: remove phosphor-ipmi-blobs dependency

The host tool depended on the BMC header: firmware_handler.hpp because
it defined the flags.  This header depends on phosphor-ipmi-blobs,
therefore the host-tool depends on this.  Move the flags into a separate
common header file and snip this dependency.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Id2ad33a1611c02605a1ed5c695429d0451eb98d4
diff --git a/bmc/pci_handler.cpp b/bmc/pci_handler.cpp
index 436c63e..1b6b7ff 100644
--- a/bmc/pci_handler.cpp
+++ b/bmc/pci_handler.cpp
@@ -16,6 +16,8 @@
 
 #include "pci_handler.hpp"
 
+#include "data.hpp"
+
 #include <fcntl.h>
 #include <linux/aspeed-p2a-ctrl.h>