bmc: move away from blobs namespace

The blobs namespace is really owned by phosphor-ipmi-blobs.  Move all
phosphor-ipmi-flash objects into ipmi_flash namespace.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I51b721ad4f3cdc4cc43846c942967ed2e5f16589
diff --git a/tools/bt.hpp b/tools/bt.hpp
index 811c81d..9caac5d 100644
--- a/tools/bt.hpp
+++ b/tools/bt.hpp
@@ -17,9 +17,9 @@
         sys(sys){};
 
     bool sendContents(const std::string& input, std::uint16_t session) override;
-    blobs::FirmwareBlobHandler::UpdateFlags supportedType() const override
+    ipmi_flash::FirmwareBlobHandler::UpdateFlags supportedType() const override
     {
-        return blobs::FirmwareBlobHandler::UpdateFlags::ipmi;
+        return ipmi_flash::FirmwareBlobHandler::UpdateFlags::ipmi;
     }
 
   private: