env: fat, ubi: Fix gd->env_valid for the first write

As resolved and explained in detail in commit e589d5822c ("env: spi:
Fix gd->env_valid for the first write") and archived discussion there is
a corner case where we don't do the right thing with redundant
environments. This same exact check was present in the mmc code and
resolved with commit 813a0df27a ("env: Invert gd->env_valid for
env_mmc_save") and in the discussion of that patch, I noted that both
fat and ubi (and at the time, sf) were doing the same thing. Take the
time now to correct fat and ubi environment.

Signed-off-by: Tom Rini <trini@konsulko.com>

env/fat.c

@@ -104,7 +104,7 @@ static int env_fat_save(void)
 	}
 
 #ifdef CONFIG_ENV_REDUNDANT
-	gd->env_valid = (gd->env_valid == ENV_REDUND) ? ENV_VALID : ENV_REDUND;
+	gd->env_valid = gd->env_valid == ENV_VALID ? ENV_REDUND : ENV_VALID;
 #endif
 
 	return 0;

env/ubi.c

@@ -72,7 +72,7 @@ static int env_ubi_save(void)
 
 	puts("done\n");
 
-	gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
+	gd->env_valid = gd->env_valid == ENV_VALID ? ENV_REDUND : ENV_VALID;
 
 	return 0;
 }