[stm32f429i-discovery] Added LTDC DMA example.

This example is just using buffers and built in alpha overlay
functionality to animate a dmond floating on a checker board. After
initializing of the frame buffers only 7 registers are being modified to
implement the animation.

examples/stm32/f4/stm32f429i-discovery/lcd-dma/clock.h

@@ -0,0 +1,17 @@
+/*
+ * This include file describes the functions exported by clock.c
+ */
+#ifndef __CLOCK_H
+#define __CLOCK_H
+
+#include <stdint.h>
+
+/*
+ * Definitions for functions being abstracted out
+ */
+void milli_sleep(uint32_t);
+uint32_t mtime(void);
+void clock_setup(void);
+
+#endif /* generic header protector */
+