Correctly link function

ran_func_kpm.c uses cp_ba_to_str(), but it is not defined in OAI. Define
it so we can link properly, instead of relying on FlexRIC (where it was
defined).

openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_kpm.c

@@ -23,6 +23,7 @@
 #include "ran_func_kpm_subs.h"
 #include "ran_e2sm_ue_id.h"
 
+#include "common/utils/ds/byte_array.h"
 #include "openair2/E1AP/e1ap_common.h"
 #include "openair2/E2AP/flexric/src/util/time_now_us.h"
 #include "openair2/F1AP/f1ap_ids.h"