x86: bootm: Add dm_remove_devices_flags() call to bootm_announce_and_cleanup()

This patch adds a call to dm_remove_devices_flags() to
bootm_announce_and_cleanup() so that drivers that have one of the removal
flags set (e.g. DM_FLAG_ACTIVE_DMA_REMOVE) in their driver struct, may
do some last-stage cleanup before the OS is started.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/x86/lib/bootm.c

@@ -10,6 +10,8 @@
 
 #include <common.h>
 #include <command.h>
+#include <dm/device.h>
+#include <dm/root.h>
 #include <errno.h>
 #include <fdt_support.h>
 #include <image.h>
@@ -46,6 +48,13 @@ void bootm_announce_and_cleanup(void)
 #ifdef CONFIG_BOOTSTAGE_REPORT
 	bootstage_report();
 #endif
+
+	/*
+	 * Call remove function of all devices with a removal flag set.
+	 * This may be useful for last-stage operations, like cancelling
+	 * of DMA operation or releasing device internal buffers.
+	 */
+	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
 }
 
 #if defined(CONFIG_OF_LIBFDT) && !defined(CONFIG_OF_NO_KERNEL)