Add tools for RUTX platform on 6.1 kernel

6.1/target/linux/ipq40xx/base-files/lib/functions/board.sh

@@ -0,0 +1,54 @@
+
+. /usr/share/libubox/jshn.sh
+
+# when device contains 2 internal modems, this function will return '2' if
+#  selected modem(inc_id) is builtin and primary.
+# And if it's only builtin, then '1'
+is_builtin_modem() {
+	local inc_id="$1"
+	local modem modems id builtin primary
+
+	json_init
+	json_load_file "/etc/board.json"
+
+	json_get_keys modems modems
+	json_select modems
+
+	for modem in $modems; do
+		json_select "$modem"
+		json_get_vars id builtin primary
+
+		[ "$id" = "$inc_id" ] && {
+			[ -n "$builtin" ] && {
+				[ -n "$primary" ] && {
+					echo 2
+					return
+				}
+
+				echo 1
+				return
+			}
+
+			echo 0
+			return
+		}
+
+		json_select ..
+	done
+
+	echo 0
+}
+
+is_dual_modem() {
+	json_init
+	json_load_file "/etc/board.json"
+
+	json_get_keys hwinfo hwinfo
+	json_select hwinfo
+
+	json_get_vars dual_modem
+
+	[ "$dual_modem" = "1" ] && echo 1 || echo 0
+
+	json_select ..
+}