omap: detect board before spl_early_init()

In order to be able to select the right DTB, we need to have identified the
board before spl_early_init() is called.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/mach-omap2/hwinit-common.c

@@ -165,9 +165,11 @@ void early_system_init(void)
 	 * to prevent overwrites.
 	 */
 	save_omap_boot_params();
-	spl_early_init();
 #endif
 	do_board_detect();
+#ifdef CONFIG_SPL_BUILD
+	spl_early_init();
+#endif
 	vcores_init();
 #ifdef CONFIG_DEBUG_UART_OMAP
 	debug_uart_init();