Remove osmo-iuh subdir level from include/ (2/2)

Make all changes to #include statements and build files.
diff --git a/src/ranap/RANAP_SRB-TrCH-Mapping.c b/src/ranap/RANAP_SRB-TrCH-Mapping.c
index dfbaa1b..3ff0d0f 100644
--- a/src/ranap/RANAP_SRB-TrCH-Mapping.c
+++ b/src/ranap/RANAP_SRB-TrCH-Mapping.c
@@ -4,7 +4,7 @@
  * 	found in "../../asn1/ranap/RANAP-IEs.asn"
  */
 
-#include <osmocom/osmo-iuh/ranap/RANAP_SRB-TrCH-Mapping.h>
+#include <osmocom/ranap/RANAP_SRB-TrCH-Mapping.h>
 
 static asn_per_constraints_t asn_PER_type_RANAP_SRB_TrCH_Mapping_constr_1 GCC_NOTUSED = {
 	{ APC_UNCONSTRAINED,	-1, -1,  0,  0 },