framebuffer: s6 edge takes a little lomger to initialize fb0

Change-Id: I48a5b25a227afb8637fcce7e4a1e2fc6bcc56b03

minuitwrp/graphics.c

@@ -167,7 +167,8 @@ static int get_framebuffer(GGLSurface *fb)
     void *bits;
 
     fd = open("/dev/graphics/fb0", O_RDWR);
-    while (fd < 0 && index < 10) {
+    
+    while (fd < 0 && index < 30) {
         usleep(1000);
         fd = open("/dev/graphics/fb0", O_RDWR);
         index++;