common: Move testdram() into init.h

This function is called during init so move it to the init header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/freescale/m5249evb/m5249evb.c b/board/freescale/m5249evb/m5249evb.c
index 9969f71..da3adc5 100644
--- a/board/freescale/m5249evb/m5249evb.c
+++ b/board/freescale/m5249evb/m5249evb.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <command.h>
+#include <init.h>
 #include <malloc.h>
 #include <asm/immap.h>
 
@@ -89,7 +90,8 @@
 };
 
 
-int testdram (void) {
+int testdram(void)
+{
 	/* TODO: XXX XXX XXX */
 	printf ("DRAM test not implemented!\n");