Update EBL to have an optional width specifier on commands. So hexdump.4 means use a width of 4 bytes.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9974 6f19259b-4bc3-4df7-8a09-765794883524

EmbeddedPkg/Ebl/Ebl.h

@@ -184,6 +184,13 @@ OutputData (
   IN UINTN  Width,
   IN UINTN  Offset
   );
+  
+UINTN
+WidthFromCommandName (
+  IN CHAR8  *Argv,
+  IN UINTN  Default
+  );
+
 
 extern UINTN    gScreenColumns;
 extern UINTN    gScreenRows;