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/status.hpp b/status.hpp
index 7ef0ce2..c5ea42a 100644
--- a/status.hpp
+++ b/status.hpp
@@ -2,7 +2,7 @@
 
 #include <cstdint>
 
-namespace blobs
+namespace ipmi_flash
 {
 
 enum class VerifyCheckResponses : std::uint8_t