package/uhd: fix typo

Replace ENABLE_DPKD by ENABLE_DPDK to fix the following error:

  Manually-specified variables were not used by the project:

    BUILD_DOC
    BUILD_DOCS
    BUILD_EXAMPLE
    BUILD_EXAMPLES
    BUILD_TEST
    BUILD_TESTING
    BUILD_TESTS
    ENABLE_DPKD

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
diff --git a/package/uhd/uhd.mk b/package/uhd/uhd.mk
index adb7579..2a40efd 100644
--- a/package/uhd/uhd.mk
+++ b/package/uhd/uhd.mk
@@ -23,7 +23,7 @@
 	-DRUNTIME_PYTHON_EXECUTABLE=/usr/bin/python \
 	-DENABLE_C_API=ON \
 	-DENABLE_DOXYGEN=OFF \
-	-DENABLE_DPKD=OFF \
+	-DENABLE_DPDK=OFF \
 	-DENABLE_LIBUHD=ON \
 	-DENABLE_N230=OFF \
 	-DENABLE_N300=OFF \