avfilter/showcqt: fix dependency with avformat

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

configure

@@ -2832,7 +2832,7 @@ scale_filter_deps="swscale"
 scale2ref_filter_deps="swscale"
 select_filter_select="pixelutils"
 smartblur_filter_deps="gpl swscale"
-showcqt_filter_deps="avcodec swscale"
+showcqt_filter_deps="avcodec avformat swscale"
 showcqt_filter_select="fft"
 showfreqs_filter_deps="avcodec"
 showfreqs_filter_select="fft"

libavfilter/Makefile

@@ -272,7 +272,7 @@ OBJS-$(CONFIG_ADRAWGRAPH_FILTER)             += f_drawgraph.o
 OBJS-$(CONFIG_APHASEMETER_FILTER)            += avf_aphasemeter.o
 OBJS-$(CONFIG_AVECTORSCOPE_FILTER)           += avf_avectorscope.o
 OBJS-$(CONFIG_CONCAT_FILTER)                 += avf_concat.o
-OBJS-$(CONFIG_SHOWCQT_FILTER)                += avf_showcqt.o lswsutils.o
+OBJS-$(CONFIG_SHOWCQT_FILTER)                += avf_showcqt.o lswsutils.o lavfutils.o
 OBJS-$(CONFIG_SHOWFREQS_FILTER)              += avf_showfreqs.o
 OBJS-$(CONFIG_SHOWSPECTRUM_FILTER)           += avf_showspectrum.o
 OBJS-$(CONFIG_SHOWVOLUME_FILTER)             += avf_showvolume.o