admswconfig: fix compile with musl

caddr_t is not defined everywhere any more, cast it the the real
pointer type of ifr_data.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 46371

package/utils/admswconfig/patches/002-fix-musl.patch

@@ -0,0 +1,11 @@
+--- a/admswconfig.c
++++ b/admswconfig.c
+@@ -68,7 +68,7 @@ int main(int argc, char **argv)
+ 		return 1;
+ 	}
+ 	strcpy(ifr.ifr_name, device);
+-	ifr.ifr_data = (caddr_t)&info;
++	ifr.ifr_data = (void *)&info;
+ 	if (ioctl(fd, SIOCGADMINFO, &ifr) < 0) {
+ 		perror("SIOCGADMINFO");
+ 		return 1;