macchanger: add alpine patch to fix musl.

srcpkgs/macchanger/patches/fix-caddr_t.patch

@@ -0,0 +1,13 @@
+https://github.com/alobbs/macchanger/issues/14
+
+--- ./src/netinfo.c.orig
++++ ./src/netinfo.c
+@@ -113,7 +113,7 @@
+ 	epa->size = IFHWADDRLEN;
+ 
+ 	memcpy(&req, &(net->dev), sizeof(struct ifreq));
+-	req.ifr_data = (caddr_t)epa;
++	req.ifr_data = (void *)epa;
+ 
+ 	if (ioctl(net->sock, SIOCETHTOOL, &req) < 0) {
+ 		perror ("[ERROR] Could not read permanent MAC");

srcpkgs/macchanger/template

@@ -1,7 +1,7 @@
 # Template file for 'macchanger'
 pkgname=macchanger
 version=1.7.0
-revision=1
+revision=2
 build_pie=yes
 build_style=gnu-configure
 configure_script="./autogen.sh"