configure: move the hardware accel libs' entries in the configure output

Print them as a subsection of the external library section, in line with
what is done for the help text in the previous commit.

configure

@@ -1219,6 +1219,20 @@ EXAMPLE_LIST="
     transcode_aac_example
 "
 
+HWACCEL_LIBRARY_LIST="
+    cuda
+    d3d11va
+    dxva2
+    libmfx
+    libnpp
+    mmal
+    nvenc
+    omx
+    vaapi
+    vda
+    vdpau
+"
+
 EXTERNAL_LIBRARY_LIST="
     avisynth
     bzlib
@@ -1236,7 +1250,6 @@ EXTERNAL_LIBRARY_LIST="
     libilbc
     libkvazaar
     libmp3lame
-    libnpp
     libopencore_amrnb
     libopencore_amrwb
     libopencv
@@ -1281,22 +1294,6 @@ FEATURE_LIST="
     swscale_alpha
 "
 
-HW_CODECS_LIST="
-    cuda
-    libmfx
-    mmal
-    nvenc
-    omx
-"
-
-HWACCEL_LIST="
-    d3d11va
-    dxva2
-    vaapi
-    vda
-    vdpau
-"
-
 LIBRARY_LIST="
     avcodec
     avdevice
@@ -1336,9 +1333,8 @@ CONFIG_LIST="
     $COMPONENT_LIST
     $EXAMPLE_LIST
     $EXTERNAL_LIBRARY_LIST
+    $HWACCEL_LIBRARY_LIST
     $FEATURE_LIST
-    $HW_CODECS_LIST
-    $HWACCEL_LIST
     $LICENSE_LIST
     $LIBRARY_LIST
     $PROGRAM_LIST
@@ -5113,6 +5109,9 @@ echo
 echo "External libraries:"
 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
 echo
+echo "External libraries providing hardware acceleration:"
+print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
+echo
 
 echo "Libraries:"
 print_enabled '' $LIBRARY_LIST | print_3_columns
@@ -5125,10 +5124,6 @@ for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf ind
     echo
 done
 
-echo "Enabled Hardware-accelerated codecs:"
-print_enabled '' $HW_CODECS_LIST | print_3_columns
-echo
-
 license="LGPL version 2.1 or later"
 if enabled nonfree; then
     license="nonfree and unredistributable"