devmatch: Convert command line flags to bools

These are bools, and should have been bools from the start. Make them
bools.

Sponsored by:		Netflix

sbin/devmatch/devmatch.c

@@ -30,6 +30,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -54,13 +55,13 @@ static struct option longopts[] = {
 
 #define	DEVMATCH_MAX_HITS 256
 
-static int all_flag;
-static int dump_flag;
+static bool all_flag;
+static bool  dump_flag;
 static char *linker_hints;
 static char *nomatch_str;
-static int quiet_flag;
-static int unbound_flag;
-static int verbose_flag;
+static bool quiet_flag;
+static bool unbound_flag;
+static bool verbose_flag;
 
 static void *hints;
 static void *hints_end;
@@ -573,10 +574,10 @@ main(int argc, char **argv)
 		    longopts, NULL)) != -1) {
 		switch (ch) {
 		case 'a':
-			all_flag++;
+			all_flag = true;
 			break;
 		case 'd':
-			dump_flag++;
+			dump_flag = true;
 			break;
 		case 'h':
 			linker_hints = optarg;
@@ -585,13 +586,13 @@ main(int argc, char **argv)
 			nomatch_str = optarg;
 			break;
 		case 'q':
-			quiet_flag++;
+			quiet_flag = true;
 			break;
 		case 'u':
-			unbound_flag++;
+			unbound_flag = true;
 			break;
 		case 'v':
-			verbose_flag++;
+			verbose_flag = true;
 			break;
 		default:
 			usage();