Upgrade Allwinner kernels to latest

Author: igorpecovnik

config/sources/families/include/sunxi64_common.inc

@@ -31,7 +31,7 @@ case $BRANCH in
 
 	current)
 		declare -g KERNEL_MAJOR_MINOR="6.12" # Major and minor versions of this kernel.
-		declare -g KERNELBRANCH="tag:v6.12.47"
+		declare -g KERNELBRANCH="tag:v6.12.57"
 		;;
 
 	edge)