bios_table: Annotate pldm_bios_table_attr_value_entry_encode_integer()

0088a6ae4cec ("bios_table: Deprecate
pldm_bios_table_attr_value_entry_encode_integer()") did the work to
deprecate the function but failed to actually mark it as such. Fix that
now.

Fixes: 0088a6ae4cec ("bios_table: Deprecate pldm_bios_table_attr_value_entry_encode_integer()")
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I84e067a3b6ad8a39100774b25feac76703153e93
diff --git a/src/bios_table.c b/src/bios_table.c
index 47c5bae..72bdbfb 100644
--- a/src/bios_table.c
+++ b/src/bios_table.c
@@ -823,7 +823,7 @@
 	       sizeof(uint64_t);
 }
 
-LIBPLDM_ABI_STABLE
+LIBPLDM_ABI_DEPRECATED
 void pldm_bios_table_attr_value_entry_encode_integer(void *entry,
 						     size_t entry_length,
 						     uint16_t attr_handle,