gsm: Introduce osmo_{rai,cgi_ps}_cmp() APIs

Similar to what we already have for other data types, such as
osmo_lai_cmp or osmo_cgi_cmp.

Change-Id: I00e329bc5be8674b30267dec238e7656ddfc21db
diff --git a/include/osmocom/gsm/gsm23003.h b/include/osmocom/gsm/gsm23003.h
index fbe0ca0..487379a 100644
--- a/include/osmocom/gsm/gsm23003.h
+++ b/include/osmocom/gsm/gsm23003.h
@@ -157,7 +157,9 @@
 int osmo_mnc_cmp(uint16_t a_mnc, bool a_mnc_3_digits, uint16_t b_mnc, bool b_mnc_3_digits);
 int osmo_plmn_cmp(const struct osmo_plmn_id *a, const struct osmo_plmn_id *b);
 int osmo_lai_cmp(const struct osmo_location_area_id *a, const struct osmo_location_area_id *b);
+int osmo_rai_cmp(const struct osmo_routing_area_id *a, const struct osmo_routing_area_id *b);
 int osmo_cgi_cmp(const struct osmo_cell_global_id *a, const struct osmo_cell_global_id *b);
+int osmo_cgi_ps_cmp(const struct osmo_cell_global_id_ps *a, const struct osmo_cell_global_id_ps *b);
 
 int osmo_gen_home_network_domain(char *out, const struct osmo_plmn_id *plmn);
 int osmo_parse_home_network_domain(struct osmo_plmn_id *out, const char *in);