ralloc: include limits.h for SIZE_MAX on Android

Android does not define SIZE_MAX in stdint.h.  We have to include
limits.h for it.

Reviewed-by: Chad Versace <chad@chad-versace.us>

src/glsl/ralloc.c

@@ -28,6 +28,11 @@
 #include <string.h>
 #include <stdint.h>
 
+/* Android defines SIZE_MAX in limits.h, instead of the standard stdint.h */
+#ifdef ANDROID
+#include <limits.h>
+#endif
+
 #include "ralloc.h"
 
 #ifdef __GNUC__