rfnoc: Add properties, nodes, and accessors

Adds the following classes:
- uhd::rfnoc::node_t, the base class for RFNoC nodes
- uhd::rfnoc::node_accessor_t, a class to access private properties
- uhd::rfnoc::res_source_info, a struct that identifies where properties
  come from
- uhd::rfnoc::property_t, and property_base_t (its parent)
- uhd::rfnoc::prop_accessor_t, a class to access properties

Add always dirty property (dirtifier).

Also adds unit tests for properties.

1 files changed, 2 insertions, 0 deletions

diff --git a/host/tests/CMakeLists.txt b/host/tests/CMakeLists.txt
index e4255196b..eab27833b 100644
--- a/host/tests/CMakeLists.txt
+++ b/host/tests/CMakeLists.txt
@@ -53,6 +53,7 @@ set(test_sources
     expert_test.cpp
     fe_conn_test.cpp
     rfnoc_chdr_test.cpp
+    rfnoc_node_test.cpp
 )
 
 set(benchmark_sources
@@ -72,6 +73,7 @@ if(ENABLE_RFNOC)
         rate_node_test.cpp
         stream_sig_test.cpp
         tick_node_test.cpp
+        rfnoc_property_test.cpp
     )
 endif(ENABLE_RFNOC)