move all Allwinner uboot to v2020.10 (#3047)

* rollback uboot for sunxi64-current
* rollback all allwinner uboots

config/sources/families/include/sunxi64_common.inc

@@ -1,7 +1,8 @@
 ARCH=arm64
 ATF_TARGET_MAP="PLAT=$ATF_PLAT DEBUG=1 bl31;;build/$ATF_PLAT/debug/bl31.bin"
 BOOTDELAY=1
-BOOTBRANCH='tag:v2021.04'
+##https://armbian.atlassian.net/browse/AR-867
+BOOTBRANCH='tag:v2020.10'
 BOOTPATCHDIR='u-boot-sunxi'
 BOOTENV_FILE='sunxi.txt'
 UBOOT_TARGET_MAP=';;u-boot-sunxi-with-spl.bin'

config/sources/families/include/sunxi_common.inc

@@ -1,6 +1,7 @@
 ARCH=armhf
 BOOTDELAY=1
-BOOTBRANCH='tag:v2021.04'
+##https://armbian.atlassian.net/browse/AR-867
+BOOTBRANCH='tag:v2020.10'
 BOOTPATCHDIR='u-boot-sunxi'
 UBOOT_TARGET_MAP=';;u-boot-sunxi-with-spl.bin'
 BOOTSCRIPT="boot-sunxi.cmd:boot.cmd"

config/sources/families/sun7i.conf

@@ -3,10 +3,6 @@ OVERLAY_PREFIX='sun7i-a20'
 [[ -z $CPUMIN ]] && CPUMIN=480000
 [[ -z $CPUMAX ]] && CPUMAX=1010000
 
-# some 32bit Allwinner devices are unstable at 2021.xx
-# https://armbian.atlassian.net/browse/AR-749
-BOOTBRANCH='tag:v2020.10'
-
 family_tweaks_bsp_s()
 {
 	if [[ $BOARD == olimex-som204-a20 ]]; then

config/sources/families/sun8i.conf

@@ -7,10 +7,6 @@ fi
 [[ -z $CPUMIN ]] && CPUMIN=480000
 [[ -z $CPUMAX ]] && CPUMAX=1400000
 
-# some 32bit Allwinner devices are unstable at 2021.xx
-# https://armbian.atlassian.net/browse/AR-749
-BOOTBRANCH='tag:v2020.10'
-
 family_tweaks_s()
 {
 	if [[ ${BOARD} == nanopi-r1 ]]; then