avcodec/hevc_parser: fix packet_split function name

Fixes compilation of hevc_parser without hevc_decoder
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/hevc_parser.c

@@ -89,7 +89,7 @@ static int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
     HEVCParserContext *ctx = s->priv_data;
     int ret, i;
 
-    ret = ff_h2645_split_packet(&ctx->pkt, buf, buf_size, avctx, 0, 0,
+    ret = ff_h2645_packet_split(&ctx->pkt, buf, buf_size, avctx, 0, 0,
                                 AV_CODEC_ID_HEVC);
     if (ret < 0)
         return ret;