clearfog: Refactor the U-Boot patches and move extra boot args to an extra variable

Change-Id: I171d92d50d72c82bcb3a0a77a888750f049deffb
diff --git a/board/czechlight/clearfog/patches/u-boot/0002-clearfog-Add-another-redundant-environment-storage.patch b/board/czechlight/clearfog/patches/u-boot/0002-clearfog-Add-another-redundant-environment-storage.patch
new file mode 100644
index 0000000..22233ce
--- /dev/null
+++ b/board/czechlight/clearfog/patches/u-boot/0002-clearfog-Add-another-redundant-environment-storage.patch
@@ -0,0 +1,26 @@
+From 2efee00c747c83a7255c6fabc573da1210d5e45c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jan=20Kundr=C3=A1t?= <jan.kundrat@cesnet.cz>
+Date: Tue, 10 Oct 2017 20:49:41 +0200
+Subject: [PATCH 2/5] clearfog: Add another, redundant environment storage
+
+---
+ include/configs/clearfog.h | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/include/configs/clearfog.h b/include/configs/clearfog.h
+index eac1e8bbce..8f87eca771 100644
+--- a/include/configs/clearfog.h
++++ b/include/configs/clearfog.h
+@@ -70,6 +70,9 @@
+ #define CONFIG_ENV_OFFSET		0xf0000
+ #define CONFIG_ENV_ADDR			CONFIG_ENV_OFFSET
+ 
++#define CONFIG_ENV_OFFSET_REDUND	0xe0000
++#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
++
+ #define CONFIG_PHY_MARVELL		/* there is a marvell phy */
+ #define PHY_ANEG_TIMEOUT	8000	/* PHY needs a longer aneg time */
+ 
+-- 
+2.14.1
+