clearfog: U-Boot: Do not store everything into the env

...when a regular variable is enough.

Change-Id: I29da1015324aeeecc24b06174b2b14c0e4bd2a02
diff --git a/board/czechlight/clearfog/patches/u-boot/boot.patch b/board/czechlight/clearfog/patches/u-boot/boot.patch
index 06ac464..d1b6b80 100644
--- a/board/czechlight/clearfog/patches/u-boot/boot.patch
+++ b/board/czechlight/clearfog/patches/u-boot/boot.patch
@@ -159,7 +159,7 @@
 +CONFIG_WDT=y
 +CONFIG_WDT_ORION=y
 diff --git a/include/configs/clearfog.h b/include/configs/clearfog.h
-index 7d56dfd86e..e92b07871d 100644
+index 7d56dfd86e..c7697ad0f4 100644
 --- a/include/configs/clearfog.h
 +++ b/include/configs/clearfog.h
 @@ -21,6 +21,14 @@
@@ -187,7 +187,7 @@
  #define PHY_ANEG_TIMEOUT	8000	/* PHY needs a longer aneg time */
  
  /* PCIe support */
-@@ -139,14 +150,45 @@
+@@ -139,14 +150,44 @@
  	"scriptaddr=" SCRIPT_ADDR_R "\0" \
  	"pxefile_addr_r=" PXEFILE_ADDR_R "\0"
  
@@ -203,7 +203,6 @@
 +	"bootcmd=test -n \"${BOOT_A_LEFT}\" || setenv BOOT_A_LEFT 3;" \
 +	"test -n \"${BOOT_B_LEFT}\" || setenv BOOT_B_LEFT 3;" \
 +	"test -n \"${BOOT_ORDER}\" || setenv BOOT_ORDER \"A B\";" \
-+	"setenv rauc_part;" \
 +	"for BOOT_SLOT in \"${BOOT_ORDER}\"; do" \
 +	"  if test \"x${rauc_part}\" != \"x\"; then" \
 +	"    ;" \
@@ -211,15 +210,15 @@
 +	"    if test ${BOOT_A_LEFT} -gt 0; then" \
 +	"      setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1;" \
 +	"      echo \"Found valid slot A, ${BOOT_A_LEFT} attempts remaining\";" \
-+	"      setenv rauc_part 1;" \
-+	"      setenv rauc_slot A;" \
++	"      rauc_part=1;" \
++	"      rauc_slot=A;" \
 +	"    fi;" \
 +	"  elif test \"x${BOOT_SLOT}\" = \"xB\"; then" \
 +	"    if test ${BOOT_B_LEFT} -gt 0; then" \
 +	"      setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1;" \
 +	"      echo \"Found valid slot B, ${BOOT_B_LEFT} attempts remaining\";" \
-+	"      setenv rauc_part 3;" \
-+	"      setenv rauc_slot B;" \
++	"      rauc_part=3;" \
++	"      rauc_slot=B;" \
 +	"    fi;" \
 +	"  fi;" \
 +	"done;" \