build: cosmetics: Add missing end-of-line backslashes to item lists.

libavcodec/Makefile

@@ -696,7 +696,8 @@ SKIPHEADERS                            += %_tablegen.h                  \
                                           aac_tablegen_decl.h           \
                                           fft-internal.h                \
                                           tableprint.h                  \
-                                          $(ARCH)/vp56_arith.h
+                                          $(ARCH)/vp56_arith.h          \
+
 SKIPHEADERS-$(CONFIG_DXVA2)            += dxva2.h dxva2_internal.h
 SKIPHEADERS-$(CONFIG_LIBSCHROEDINGER)  += libschroedinger.h
 SKIPHEADERS-$(CONFIG_MPEG_XVMC_DECODER) += xvmc.h

libavfilter/Makefile

@@ -16,7 +16,7 @@ OBJS = allfilters.o                                                     \
        formats.o                                                        \
        graphparser.o                                                    \
        vf_scale.o                                                       \
-       vsrc_buffer.o
+       vsrc_buffer.o                                                    \
 
 OBJS-$(CONFIG_ANULL_FILTER)                  += af_anull.o
 

libavresample/Makefile

@@ -2,7 +2,7 @@ NAME = avresample
 FFLIBS = avutil
 
 HEADERS = avresample.h                                                  \
-          version.h
+          version.h                                                     \
 
 OBJS = audio_convert.o                                                  \
        audio_data.o                                                     \
@@ -10,6 +10,6 @@ OBJS = audio_convert.o                                                  \
        audio_mix_matrix.o                                               \
        options.o                                                        \
        resample.o                                                       \
-       utils.o
+       utils.o                                                          \
 
 TESTPROGS = avresample

libavresample/x86/Makefile

 OBJS      += x86/audio_convert_init.o                                   \
-             x86/audio_mix_init.o
+             x86/audio_mix_init.o                                       \
 
 YASM-OBJS += x86/audio_convert.o                                        \
-             x86/audio_mix.o
+             x86/audio_mix.o                                            \

libavutil/arm/Makefile

-OBJS += arm/cpu.o
+OBJS += arm/cpu.o                                                       \