fix: 获取rockchip 型号

pack-ci.sh

@@ -362,9 +362,12 @@ __pack_super_img() {
 __get_chip_from_parameter() {
     local parameter_file
     local chip
-    local arg
     parameter_file="$1"
-    chip=$(grep "MACHINE:" "$parameter_file" | grep -P -o "rk\d+")
+    chip=$(grep "MACHINE:" "$parameter_file" | grep -i -P -o "rk\d+")
+    if [[ -z "$chip" ]]
+    then
+        chip=$(grep "MACHINE_MODEL:" "$parameter_file" | grep -i -P -o "rk\d+")
+    fi
     chip=${chip^^}
     case $chip in
     PX30 | RK3358)