Remove UCI dependencies from swconfig command

swconfig was a tool developped by OpenWrt maintainers, and obviously for
OpenWrt. The tool allow to set configuration parameters to a hardware switch
using the swconfig Netlink API.

Most of the tool is generic, however the load sub-command relies on an OpenWrt
specific mechanism: UCI. In OpenWrt, UCI is a system-wide database which can be
used to configure all the system.

As Chrome OS does not use UCI, this patch removes all the UCI dependencies.
--- a/src/cli.c
+++ b/src/cli.c
@@ -17,13 +17,13 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <inttypes.h>
 #include <errno.h>
 #include <stdint.h>
 #include <getopt.h>
 #include <sys/types.h>
 #include <sys/socket.h>
-#include <uci.h>
 
 #include <linux/types.h>
 #include <linux/netlink.h>
@@ -38,7 +38,6 @@ enum {
 	CMD_NONE,
 	CMD_GET,
 	CMD_SET,
-	CMD_LOAD,
 	CMD_HELP,
 	CMD_SHOW,
 	CMD_PORTMAP,
@@ -169,36 +168,10 @@ static void
 print_usage(void)
 {
 	printf("swconfig list\n");
-	printf("swconfig dev <dev> [port <port>|vlan <vlan>] (help|set <key> <value>|get <key>|load <config>|show)\n");
+	printf("swconfig dev <dev> [port <port>|vlan <vlan>] (help|set <key> <value>|get <key>|show)\n");
 	exit(1);
 }
 
-static void
-swconfig_load_uci(struct switch_dev *dev, const char *name)
-{
-	struct uci_context *ctx;
-	struct uci_package *p = NULL;
-	int ret = -1;
-
-	ctx = uci_alloc_context();
-	if (!ctx)
-		return;
-
-	uci_load(ctx, name, &p);
-	if (!p) {
-		uci_perror(ctx, "Failed to load config file: ");
-		goto out;
-	}
-
-	ret = swlib_apply_from_uci(dev, p);
-	if (ret < 0)
-		fprintf(stderr, "Failed to apply configuration for switch '%s'\n", dev->dev_name);
-
-out:
-	uci_free_context(ctx);
-	exit(ret);
-}
-
 int main(int argc, char **argv)
 {
 	int retval = 0;
@@ -247,11 +220,6 @@ int main(int argc, char **argv)
 		} else if (!strcmp(arg, "get") && i+1 < argc) {
 			cmd = CMD_GET;
 			ckey = argv[++i];
-		} else if (!strcmp(arg, "load") && i+1 < argc) {
-			if ((cport >= 0) || (cvlan >= 0))
-				print_usage();
-			cmd = CMD_LOAD;
-			ckey = argv[++i];
 		} else if (!strcmp(arg, "portmap")) {
 			if (i + 1 < argc)
 				csegment = argv[++i];
@@ -323,9 +291,6 @@ int main(int argc, char **argv)
 		print_attr_val(a, &val);
 		putchar('\n');
 		break;
-	case CMD_LOAD:
-		swconfig_load_uci(dev, ckey);
-		break;
 	case CMD_HELP:
 		list_attributes(dev);
 		break;
--- a/src/Makefile
+++ b/src/Makefile
@@ -13,5 +13,5 @@ all: swconfig
 %.o: %.c
 	$(CC) $(CFLAGS) -c -o $@ $^
 
-swconfig: cli.o swlib.o uci.o
+swconfig: cli.o swlib.o
 	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)