sm8550: Added edge branch with kernel 6.18.y

Signed-off-by: Alex Ling <ling_kasim@hotmail.com>

Author: kasimling

config/sources/families/sm8550.conf

@@ -21,6 +21,12 @@ case $BRANCH in
 		declare -g -i KERNEL_GIT_CACHE_TTL=120 # 2 minutes; this is a high-traffic repo
 		;;
 
+	edge)
+		declare -g KERNEL_MAJOR_MINOR="6.18" # Major and minor versions of this kernel.
+		declare -g KERNELBRANCH='branch:linux-6.18.y'
+		declare -g -i KERNEL_GIT_CACHE_TTL=120 # 2 minutes; this is a high-traffic repo
+		;;
+
 esac
 
 family_tweaks_bsp() {