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/image_mock.hpp b/test/image_mock.hpp
index c831c45..fb10c39 100644
--- a/test/image_mock.hpp
+++ b/test/image_mock.hpp
@@ -4,7 +4,7 @@
 
 #include <gmock/gmock.h>
 
-namespace blobs
+namespace ipmi_flash
 {
 
 class ImageHandlerMock : public ImageHandlerInterface
@@ -18,4 +18,4 @@
     MOCK_METHOD0(getSize, int());
 };
 
-} // namespace blobs
+} // namespace ipmi_flash