ipmi: pull the netfn and command into parameters

Pull the netfn and cmd into parameters instead of hard-coding them for
blob commands.

Tested: Only ran unit-tests.
Change-Id: I1a73de32e14cc78ece94a26f6c447824af88c984
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/src/ipmiblob/blob_handler.cpp b/src/ipmiblob/blob_handler.cpp
index 039b7e0..6adbe89 100644
--- a/src/ipmiblob/blob_handler.cpp
+++ b/src/ipmiblob/blob_handler.cpp
@@ -67,7 +67,7 @@
 
     try
     {
-        reply = ipmi->sendPacket(request);
+        reply = ipmi->sendPacket(ipmiOEMNetFn, ipmiOEMBlobCmd, request);
     }
     catch (const IpmiException& e)
     {