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/common/cmd_log.c b/common/cmd_log.c
index b9f9ba0..c6e72ac 100644
--- a/common/cmd_log.c
+++ b/common/cmd_log.c
@@ -107,7 +107,7 @@
 	if ((s = getenv ("loglevel")) != NULL)
 		console_loglevel = (int)simple_strtoul (s, NULL, 10);
 
-	gd->post_log_word |= LOGBUFF_INITIALIZED;
+	gd->flags |= GD_FLG_LOGINIT;
 }
 
 void logbuff_reset (void)
@@ -168,7 +168,7 @@
 
 void logbuff_log(char *msg)
 {
-	if ((gd->post_log_word & LOGBUFF_INITIALIZED)) {
+	if ((gd->flags & GD_FLG_LOGINIT)) {
 		logbuff_printk (msg);
 	} else {
 		/* Can happen only for pre-relocated errors as logging */