avcodec/allcodecs: Re-order nvenc encoders below x264/5.

We shouldn't pick nvenc by default.
Signed-off-by: Philip Langdale <philipl@overt.org>

libavcodec/allcodecs.c

@@ -235,9 +235,6 @@ void avcodec_register_all(void)
     REGISTER_DECODER(MVC2,              mvc2);
     REGISTER_DECODER(MXPEG,             mxpeg);
     REGISTER_DECODER(NUV,               nuv);
-    REGISTER_ENCODER(NVENC,             nvenc);
-    REGISTER_ENCODER(NVENC_H264,        nvenc_h264);
-    REGISTER_ENCODER(NVENC_HEVC,        nvenc_hevc);
     REGISTER_DECODER(PAF_VIDEO,         paf_video);
     REGISTER_ENCDEC (PAM,               pam);
     REGISTER_ENCDEC (PBM,               pbm);
@@ -565,6 +562,9 @@ void avcodec_register_all(void)
      * above is available */
     REGISTER_ENCODER(LIBOPENH264,       libopenh264);
     REGISTER_ENCODER(H264_QSV,          h264_qsv);
+    REGISTER_ENCODER(NVENC,             nvenc);
+    REGISTER_ENCODER(NVENC_H264,        nvenc_h264);
+    REGISTER_ENCODER(NVENC_HEVC,        nvenc_hevc);
 
     /* parsers */
     REGISTER_PARSER(AAC,                aac);