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/test/data_interface_mock.hpp b/test/data_interface_mock.hpp
index 3e8f24a..3189e5b 100644
--- a/test/data_interface_mock.hpp
+++ b/test/data_interface_mock.hpp
@@ -15,7 +15,7 @@
 
     MOCK_METHOD2(sendContents, bool(const std::string&, std::uint16_t));
     MOCK_CONST_METHOD0(supportedType,
-                       blobs::FirmwareBlobHandler::UpdateFlags());
+                       ipmi_flash::FirmwareBlobHandler::UpdateFlags());
 };
 
 } // namespace host_tool