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/test/firmware_handler_unittest.cpp b/bmc/test/firmware_handler_unittest.cpp
index 27bd517..7ab224d 100644
--- a/bmc/test/firmware_handler_unittest.cpp
+++ b/bmc/test/firmware_handler_unittest.cpp
@@ -1,4 +1,5 @@
 #include "firmware_handler.hpp"
+#include "flags.hpp"
 #include "image_mock.hpp"
 #include "triggerable_mock.hpp"
 #include "util.hpp"
@@ -18,7 +19,7 @@
 TEST(FirmwareHandlerTest, CreateEmptyListVerifyFails)
 {
     std::vector<DataHandlerPack> data = {
-        {FirmwareBlobHandler::UpdateFlags::ipmi, nullptr},
+        {FirmwareFlags::UpdateFlags::ipmi, nullptr},
     };
 
     auto handler = FirmwareBlobHandler::CreateFirmwareBlobHandler(
@@ -49,7 +50,7 @@
         {"asdf", &imageMock},
     };
     std::vector<DataHandlerPack> data = {
-        {FirmwareBlobHandler::UpdateFlags::ipmi, nullptr},
+        {FirmwareFlags::UpdateFlags::ipmi, nullptr},
     };
 
     auto handler = FirmwareBlobHandler::CreateFirmwareBlobHandler(