Vita: enable mp3 and flac music support

src/Makefile

@@ -92,7 +92,7 @@ ifeq ($(TARGET),vita)			# compiling for Vita target
 SYS_CFLAGS = -DTARGET_SDL2  -I$(VITASDK)/$(PREFIX)/include/SDL2 \
         -Wl,-q -Wall -Wno-unused-variable -O3 \
         -ffast-math -mtune=cortex-a9 -mfpu=neon
-SYS_LDFLAGS = $(SYS_CFLAGS) -lSDL2_image -lSDL2_mixer -lSDL2_net -lSDL2 -lvorbisfile -lvorbis -logg -lmikmod -lvita2d \
+SYS_LDFLAGS = $(SYS_CFLAGS) -lSDL2_image -lSDL2_mixer -lSDL2_net -lSDL2 -lvorbisfile -lvorbis -logg -lmikmod -lmpg123 -lflac -lvita2d \
         -lSceAudio_stub -lSceLibKernel_stub -lSceDisplay_stub -lSceGxm_stub      \
         -lmikmod -lSceSysmodule_stub -lSceCtrl_stub -lSceTouch_stub -lm -lSceNet_stub \
         -lSceNetCtl_stub -lScePgf_stub -ljpeg -lfreetype -lc -lSceHid_stub \