lavc video: NVENC: update ver comparison

Current libavcodec version is still 60.22.100 so intra-refresh has been
disabled since e457ab8 because the version is still not strictly greater
(is equal). Using non-strict equality breaks the compilation with version
60.22.100 prior to FFmpeg commit e457ab8 (perhaps not a big deal).

refer to GH-330

Author: MartinPulec

src/video_compress/libavcodec.cpp

@@ -1539,7 +1539,7 @@ static void configure_nvenc(AVCodecContext *codec_ctx, struct setparam_param *pa
         }
 
         set_forced_idr(codec_ctx, 1);
-#if LIBAVCODEC_VERSION_INT > AV_VERSION_INT(60, 22, 100)
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 22, 100)
         const bool new_ff = true;
 #else
         const bool new_ff = false;