bios_table: Deprecate pldm_bios_table_attr_value_entry_encode_enum()

Users should prefer pldm_bios_table_attr_value_entry_encode_enum_check()
which returns an error code instead of preventing misbehaviour via
assert().

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I9442fd35a0d2240572d600189387215664bef60d
diff --git a/tests/libpldm_bios_table_test.cpp b/tests/libpldm_bios_table_test.cpp
index cdcefce..6bf60a7 100644
--- a/tests/libpldm_bios_table_test.cpp
+++ b/tests/libpldm_bios_table_test.cpp
@@ -590,7 +590,7 @@
     EXPECT_DEATH(
         pldm_bios_table_attr_value_entry_encode_enum(
             encodeEntry.data(), encodeEntry.size() - 1, 0, 0, 2, handles),
-        "length <= entry_length");
+        "rc == PLDM_SUCCESS");
 
     auto rc = pldm_bios_table_attr_value_entry_encode_enum_check(
         encodeEntry.data(), encodeEntry.size(), 0, PLDM_BIOS_ENUMERATION, 2,