swscale: Add some missing av_cold to arch-specific init functions

libswscale/bfin/swscale_bfin.c

@@ -23,6 +23,7 @@
 #include <stdint.h>
 
 #include "config.h"
+#include "libavutil/attributes.h"
 #include "libswscale/swscale_internal.h"
 
 #if defined (__FDPIC__) && CONFIG_SRAM
@@ -71,7 +72,7 @@ static int yuyvtoyv12_unscaled(SwsContext *c, const uint8_t *src[],
     return srcSliceH;
 }
 
-void ff_get_unscaled_swscale_bfin(SwsContext *c)
+av_cold void ff_get_unscaled_swscale_bfin(SwsContext *c)
 {
     if (c->dstFormat == AV_PIX_FMT_YUV420P && c->srcFormat == AV_PIX_FMT_UYVY422) {
         av_log(NULL, AV_LOG_VERBOSE,

libswscale/bfin/yuv2rgb_bfin.c

@@ -24,6 +24,7 @@
 #include <stdint.h>
 
 #include "config.h"
+#include "libavutil/attributes.h"
 #include "libswscale/swscale_internal.h"
 
 #if defined(__FDPIC__) && CONFIG_SRAM
@@ -167,7 +168,7 @@ static int bfin_yuv420_bgr565(SwsContext *c, const uint8_t **in, int *instrides,
                            outstrides, ff_bfin_yuv2rgb565_line, 0, 565);
 }
 
-SwsFunc ff_yuv2rgb_init_bfin(SwsContext *c)
+av_cold SwsFunc ff_yuv2rgb_init_bfin(SwsContext *c)
 {
     SwsFunc f;
 

libswscale/ppc/yuv2yuv_altivec.c

@@ -24,9 +24,10 @@
 #include <inttypes.h>
 
 #include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
 #include "libswscale/swscale.h"
 #include "libswscale/swscale_internal.h"
-#include "libavutil/cpu.h"
 
 #if HAVE_ALTIVEC
 
@@ -183,7 +184,7 @@ static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t *src[],
 
 #endif /* HAVE_ALTIVEC */
 
-void ff_get_unscaled_swscale_ppc(SwsContext *c)
+av_cold void ff_get_unscaled_swscale_ppc(SwsContext *c)
 {
 #if HAVE_ALTIVEC
     if ((av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) && !(c->srcW & 15) &&