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/p2a.hpp b/tools/p2a.hpp
index eda8f61..920422f 100644
--- a/tools/p2a.hpp
+++ b/tools/p2a.hpp
@@ -30,9 +30,9 @@
     }
 
     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::p2a;
+        return ipmi_flash::FirmwareBlobHandler::UpdateFlags::p2a;
     }
 
   private: