namespace: s/host_tool/ipmiblob/g

Renamed the namespace to encapsulate the library.

Change-Id: I3deb82df5cf6916c505b57864e22a412542c9b6c
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/src/ipmiblob/blob_handler.cpp b/src/ipmiblob/blob_handler.cpp
index 5be0b2d..2ea927a 100644
--- a/src/ipmiblob/blob_handler.cpp
+++ b/src/ipmiblob/blob_handler.cpp
@@ -23,7 +23,7 @@
 #include <array>
 #include <cstring>
 
-namespace host_tool
+namespace ipmiblob
 {
 
 namespace
@@ -312,4 +312,4 @@
     return sendIpmiPayload(BlobOEMCommands::bmcBlobRead, payload);
 }
 
-} // namespace host_tool
+} // namespace ipmiblob