avfilter: rename vf_reverse.c to f_reverse.c

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/Makefile

@@ -43,7 +43,7 @@ OBJS-$(CONFIG_APAD_FILTER)                   += af_apad.o
 OBJS-$(CONFIG_APERMS_FILTER)                 += f_perms.o
 OBJS-$(CONFIG_APHASER_FILTER)                += af_aphaser.o generate_wave_table.o
 OBJS-$(CONFIG_ARESAMPLE_FILTER)              += af_aresample.o
-OBJS-$(CONFIG_AREVERSE_FILTER)               += vf_reverse.o
+OBJS-$(CONFIG_AREVERSE_FILTER)               += f_reverse.o
 OBJS-$(CONFIG_ASELECT_FILTER)                += f_select.o
 OBJS-$(CONFIG_ASENDCMD_FILTER)               += f_sendcmd.o
 OBJS-$(CONFIG_ASETNSAMPLES_FILTER)           += af_asetnsamples.o
@@ -189,7 +189,7 @@ OBJS-$(CONFIG_RANDOM_FILTER)                 += vf_random.o
 OBJS-$(CONFIG_REMOVEGRAIN_FILTER)            += vf_removegrain.o
 OBJS-$(CONFIG_REMOVELOGO_FILTER)             += bbox.o lswsutils.o lavfutils.o vf_removelogo.o
 OBJS-$(CONFIG_REPEATFIELDS_FILTER)           += vf_repeatfields.o
-OBJS-$(CONFIG_REVERSE_FILTER)                += vf_reverse.o
+OBJS-$(CONFIG_REVERSE_FILTER)                += f_reverse.o
 OBJS-$(CONFIG_ROTATE_FILTER)                 += vf_rotate.o
 OBJS-$(CONFIG_SEPARATEFIELDS_FILTER)         += vf_separatefields.o
 OBJS-$(CONFIG_SAB_FILTER)                    += vf_sab.o