uhd: Move internal headers to uhdlib/

To avoid the proliferation of additional include directories and
multiple ways of including project-local headers, we now default to
moving all headers that are used across UHD into the uhdlib/
subdirectory.

Some #include statements were also reordered as they were modified for
closer compliance with the coding guidelines.

Internal cpp source files should now include files like this:

    #include <uhdlib/rfnoc/ctrl_iface.hpp>

Reviewed-by: Ashish Chaudhari <ashish.chaudhari@ettus.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/host/lib/include/uhdlib/usrp/common/validate_subdev_spec.hpp b/host/lib/include/uhdlib/usrp/common/validate_subdev_spec.hpp
new file mode 100644
index 000000000..f2f3ce035
--- /dev/null
+++ b/host/lib/include/uhdlib/usrp/common/validate_subdev_spec.hpp
@@ -0,0 +1,28 @@
+//
+// Copyright 2011 Ettus Research LLC
+// Copyright 2018 Ettus Research, a National Instruments Company
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+
+#ifndef INCLUDED_LIBUHD_USRP_COMMON_VALIDATE_SUBDEV_SPEC_HPP
+#define INCLUDED_LIBUHD_USRP_COMMON_VALIDATE_SUBDEV_SPEC_HPP
+
+#include <uhd/config.hpp>
+#include <uhd/usrp/subdev_spec.hpp>
+#include <uhd/property_tree.hpp>
+#include <string>
+
+namespace uhd{ namespace usrp{
+
+    //! Validate a subdev spec against a property tree
+    void validate_subdev_spec(
+        property_tree::sptr tree,
+        const subdev_spec_t &spec,
+        const std::string &type, //rx or tx
+        const std::string &mb = "0"
+    );
+
+}} //namespace uhd::usrp
+
+#endif /* INCLUDED_LIBUHD_USRP_COMMON_VALIDATE_SUBDEV_SPEC_HPP */