mpv: fix build on powerpc64 w/ altivec

Fixes
http://autobuild.buildroot.net/results/77f/77f00633b0b25f001cd4ca54ed3a12aee301c287

Add a patch to work around a name collision between bool and altivec's
bool apparent when using sdl2.

Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mpv/0002-Fix-build-on-powerpc64-altivec.patch

@@ -0,0 +1,28 @@
+Subject: [PATCH] Work around bool type redefinition by altivec
+
+On powerpc64le, the SDL header from SDL2 may include altivec.h and this
+(combined with -std=c99) will cause a compile failure due to bool being
+redefined as a vector type.
+
+Re-include stdbool.h after SDL.h to restore the normal bool type.
+
+Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
+---
+ audio/out/ao_sdl.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/audio/out/ao_sdl.c b/audio/out/ao_sdl.c
+index d9d0062..0cb80d6 100644
+--- a/audio/out/ao_sdl.c
++++ b/audio/out/ao_sdl.c
+@@ -29,6 +29,7 @@
+ #include "osdep/timer.h"
+ 
+ #include <SDL.h>
++#include <stdbool.h>
+ 
+ struct priv
+ {
+-- 
+2.10.0.297.gf6727b0
+