POST: replace the LOGBUFF_INITIALIZED flag in gd->post_log_word (1 << 31) with the GD_FLG_LOGINIT flag in gd->flags.

This way we become able to utilize the full post_log_word for POST
activities (overwise, POST ECC, which has 0x8000 ID, could be
erroneously treated as started in post_output_backlog() even if there
was actually no POST ECC run (because of OCM POST failure, for
example).

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
diff --git a/include/asm-microblaze/global_data.h b/include/asm-microblaze/global_data.h
index e7a8c20..376786f 100644
--- a/include/asm-microblaze/global_data.h
+++ b/include/asm-microblaze/global_data.h
@@ -54,6 +54,7 @@
 #define	GD_FLG_SILENT	0x00004		/* Silent mode				*/
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
+#define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
 
 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r31")