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/tools/test/data_interface_mock.hpp b/tools/test/data_interface_mock.hpp
index 3189e5b..0ee799b 100644
--- a/tools/test/data_interface_mock.hpp
+++ b/tools/test/data_interface_mock.hpp
@@ -14,8 +14,7 @@
     virtual ~DataInterfaceMock() = default;
 
     MOCK_METHOD2(sendContents, bool(const std::string&, std::uint16_t));
-    MOCK_CONST_METHOD0(supportedType,
-                       ipmi_flash::FirmwareBlobHandler::UpdateFlags());
+    MOCK_CONST_METHOD0(supportedType, ipmi_flash::FirmwareFlags::UpdateFlags());
 };
 
 } // namespace host_tool