bind: bump to 9.16.12

Includes fix for security issues:

* CVE-2020-8625: BIND servers are vulnerable if they are running an
  affected version and are configured to use GSS-TSIG features.

Disable backtrace functionality, as it is unreliable across
architectures and generally only supported by upstream on amd64

Remove a patch that has been incorporated upstream

Signed-off-by: Noah Meyerhans <frodo@morgul.net>

net/bind/Makefile

@@ -9,7 +9,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=bind
-PKG_VERSION:=9.16.8
+PKG_VERSION:=9.16.12
 PKG_RELEASE:=1
 USERID:=bind=57:bind=57
 
@@ -22,7 +22,7 @@ PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:= \
 	https://www.mirrorservice.org/sites/ftp.isc.org/isc/bind9/$(PKG_VERSION) \
 	https://ftp.isc.org/isc/bind9/$(PKG_VERSION)
-PKG_HASH:=9e9b9c563692be86ec41f670f6b70e26c14e72445c742d7b5eb4db7d2b5e8d31
+PKG_HASH:=9914af9311fd349cab441097898d94fb28d0bfd9bf6ed04fe1f97f042644da7f
 
 PKG_FIXUP:=autoreconf
 PKG_REMOVE_FILES:=aclocal.m4 libtool.m4
@@ -126,6 +126,7 @@ export BUILD_CC="$(TARGET_CC)"
 TARGET_LDFLAGS += -Wl,--gc-sections,--as-needed
 
 CONFIGURE_ARGS += \
+	--disable-backtrace \
 	--disable-linux-caps \
 	--with-openssl="$(STAGING_DIR)/usr" \
 	--with-libtool \