arm: Move fdt check earlier so that board_early_init_f() can use it

We want to use the fdt inside board_early_init_f(), so check for its
presence earlier in the pre-reloc init sequence.

So far ARM and microblaze are the only only ones that use
CONFIG_OF_CONTROL. Microblaze does not have the same init loop, and in
particular does not have the board_early_init_f() call. So a patch for
microblaze would have no meaning.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/arm/lib/board.c

@@ -233,12 +233,11 @@ int power_init_board(void)
 
 init_fnc_t *init_sequence[] = {
 	arch_cpu_init,		/* basic arch cpu dependent setup */
-
-#if defined(CONFIG_BOARD_EARLY_INIT_F)
-	board_early_init_f,
-#endif
 #ifdef CONFIG_OF_CONTROL
 	fdtdec_check_fdt,
+#endif
+#if defined(CONFIG_BOARD_EARLY_INIT_F)
+	board_early_init_f,
 #endif
 	timer_init,		/* initialize timer */
 #ifdef CONFIG_BOARD_POSTCLK_INIT