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/firmware_handler.cpp b/bmc/firmware_handler.cpp
index aaabe83..5f16846 100644
--- a/bmc/firmware_handler.cpp
+++ b/bmc/firmware_handler.cpp
@@ -16,6 +16,8 @@
 
 #include "firmware_handler.hpp"
 
+#include "data.hpp"
+#include "flags.hpp"
 #include "image_handler.hpp"
 #include "status.hpp"
 #include "util.hpp"
@@ -511,7 +513,7 @@
 
     std::vector<std::uint8_t> bytes;
 
-    if (item->second->flags & UpdateFlags::ipmi)
+    if (item->second->flags & FirmwareFlags::UpdateFlags::ipmi)
     {
         bytes = data;
     }
@@ -550,7 +552,7 @@
         return false;
     }
 
-    if (item->second->flags & UpdateFlags::ipmi)
+    if (item->second->flags & FirmwareFlags::UpdateFlags::ipmi)
     {
         return false;
     }