common: Drop init.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/sr1500/socfpga.c b/board/sr1500/socfpga.c
index c9e32e3..83663c7 100644
--- a/board/sr1500/socfpga.c
+++ b/board/sr1500/socfpga.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #include <asm/arch/reset_manager.h>
 #include <asm/gpio.h>
 #include <asm/io.h>