Merge pull request #9027 from bergzand/pr/nanocoap/req_ent_incomp

nanocoap: add request entity incomplete response code

sys/include/net/nanocoap.h

@@ -143,6 +143,7 @@ extern "C" {
 #define COAP_CODE_404                        ((4 << 5) | 4)
 #define COAP_CODE_METHOD_NOT_ALLOWED         ((4 << 5) | 5)
 #define COAP_CODE_NOT_ACCEPTABLE             ((4 << 5) | 6)
+#define COAP_CODE_REQUEST_ENTITY_INCOMPLETE  ((4 << 5) | 8)
 #define COAP_CODE_PRECONDITION_FAILED        ((4 << 5) | 0xC)
 #define COAP_CODE_REQUEST_ENTITY_TOO_LARGE   ((4 << 5) | 0xD)
 #define COAP_CODE_UNSUPPORTED_CONTENT_FORMAT ((4 << 5) | 0xF)