bootstage: Make use of BOOTSTAGE_ID_RUN_OS in show_boot_progress()

This changes the number 15 as used in boot_stage_progress() to use the
new name provided for it. This is a separate patch because it touches
so many files.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>

arch/mips/lib/bootm_qemu_mips.c

@@ -39,7 +39,7 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *ima
 	/* find kernel entry point */
 	theKernel = (void (*)(int, char **, char **, int *))images->ep;
 
-	show_boot_progress (15);
+	show_boot_progress(BOOTSTAGE_ID_RUN_OS);
 
 	debug ("## Transferring control to Linux (at address %08lx) ...\n",
 		(ulong) theKernel);