Rename rde_common to bej_common

bej_common.h is a more consistant name than rde_common.h.

Also this repo only contains code related to BEJ encoding and decoding.
Therefore this change removes the rde related structs defind in the
bej_common.h. Those structs should be defined somewhere else (libpldm).

Signed-off-by: Kasun Athukorala <kasunath@google.com>
Change-Id: Ic296ece11efc0967366e197a8609c3c88c325610
diff --git a/test/meson.build b/test/meson.build
index 90ccb71..8178dc1 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -17,7 +17,7 @@
 
 gtests = [
   'bej_decoder',
-  'rde_common',
+  'bej_common',
   'bej_dictionary',
 ]
 foreach t : gtests