Bump buildroot to version 2017-02

TG-3 #closed

bsp/buildroot/board/grinn/chiliboard/genimage.cfg

@@ -0,0 +1,31 @@
+# Minimal microSD card image for Grinn's chiliBoard
+#
+
+image boot.vfat {
+  vfat {
+    files = {
+      "MLO",
+      "u-boot.img",
+      "am335x-chiliboard.dtb",
+      "zImage"
+    }
+  }
+  size = 16M
+}
+
+image sdcard.img {
+  hdimage {
+  }
+
+  partition u-boot {
+    partition-type = 0xC
+    bootable = "true"
+    image = "boot.vfat"
+    offset = 1M
+  }
+
+  partition rootfs {
+    partition-type = 0x83
+    image = "rootfs.ext4"
+  }
+}