bootm: Adjust arguments of boot_os_fn

Adjust boot_os_fn to use struct bootm_info instead of the separate
argc, argv and image parameters. Update the handlers accordingly. Few
of the functions make use of the arguments, so this improves code size
slightly.

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

arch/microblaze/lib/bootm.c

@@ -7,6 +7,7 @@
  * Yasushi SHOJI <yashi@atmark-techno.com>
  */
 
+#include <bootm.h>
 #include <bootstage.h>
 #include <command.h>
 #include <cpu_func.h>
@@ -81,9 +82,10 @@ static void boot_prep_linux(struct bootm_headers *images)
 	}
 }
 
-int do_bootm_linux(int flag, int argc, char *const argv[],
-		   struct bootm_headers *images)
+int do_bootm_linux(int flag, struct bootm_info *bmi)
 {
+	struct bootm_headers *images = bmi->images;
+
 	images->cmdline_start = (ulong)env_get("bootargs");
 
 	/* cmdline init is the part of 'prep' and nothing to do for 'bdt' */