dhcpcd: update to 8.1.1.

Add patch to fix musl builds.

srcpkgs/dhcpcd/patches/musl-if_ether.patch

@@ -0,0 +1,14 @@
+--- src/if-linux.c	2019-10-19 09:28:16.742626805 -0400
++++ src/if-linux.c	2019-10-19 09:27:47.962304568 -0400
+@@ -46,7 +46,11 @@
+ 
+ #include <arpa/inet.h>
+ #include <net/if.h>
++#if defined(__GLIBC__)
+ #include <netinet/if_ether.h>
++#else
++#include <linux/if_arp.h>
++#endif
+ #include <netinet/in_systm.h>
+ #include <netinet/in.h>
+ #include <net/route.h>

srcpkgs/dhcpcd/template

@@ -1,6 +1,6 @@
 # Template file for 'dhcpcd'
 pkgname=dhcpcd
-version=8.0.6
+version=8.1.1
 revision=1
 build_style=configure
 make_check_target=test
@@ -12,7 +12,7 @@ maintainer="Enno Boland <gottox@voidlinux.org>"
 license="BSD-2-Clause"
 homepage="https://roy.marples.name/projects/dhcpcd"
 distfiles="https://roy.marples.name/downloads/dhcpcd/dhcpcd-${version}.tar.xz"
-checksum=66b50199ed83bf502af3fab9ac001b417f0fac7e69c92d97a9c41499cebabd4f
+checksum=485d308fe10febd36b6f936e4260e4ab34a146e4f00a9f7a5509c4377ad5ea82
 lib32disabled=yes
 conf_files=/etc/dhcpcd.conf