remove libasn1c dependency and use asn1c without libasn1c

TODO: re-introduce talloc integration for asn1 runtime

Change-Id: I2140509c5359727f304470249be2a726b9a8deb1
diff --git a/src/main.c b/src/main.c
index 67b7a41..6ae47e8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -38,9 +38,11 @@
 
 static void *g_ctx;
 __thread void *talloc_asn1_ctx;
+int asn_debug;
 
 int main(int argc, char **argv)
 {
+	asn_debug = 0;
 	g_ctx = talloc_named_const(NULL, 0, "main");
 	talloc_asn1_ctx = talloc_named_const(g_ctx, 0, "asn1_context");
 	card_readers_probe(g_ctx);