bfdd: fix compilation with glibc

Remove uClibc-ng patch as it's not in the tree anymore.

Also remove the _GNU_SOURCE CFLAG for the same reason.

Refreshed patches.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

net/bfdd/Makefile

@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=bfdd
 PKG_SOURCE_DATE:=2019-08-22
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE_VERSION:=c54534beb524afc3972039f57b56ec65332b43f7
 PKG_SOURCE_URL:=https://codeload.github.com/rzalamena/bfdd/tar.gz/$(PKG_SOURCE_VERSION)?
@@ -46,8 +46,6 @@ define Package/bfdd/conffiles
 /etc/bfdd/bfdd.json
 endef
 
-TARGET_CFLAGS += -D_GNU_SOURCE
-
 define Package/bfdd/install
 	$(INSTALL_DIR) \
 	 $(1)/usr/sbin \

net/bfdd/patches/002-ipv6_musl_fix.patch

@@ -1,10 +1,18 @@
---- a/bfd_packet.c	2019-08-15 02:45:47.270120616 +0300
-+++ b/bfd_packet.c	2019-08-15 02:44:38.266117706 +0300
-@@ -34,7 +34,6 @@
+--- a/bfd_packet.c
++++ b/bfd_packet.c
+@@ -29,12 +29,15 @@
+ #define _UAPI_IPV6_H
+ #endif /* _UAPI_IPV6_H */
+ 
++#include <features.h>
+ #include <linux/filter.h>
+ #include <linux/if_ether.h>
  #include <linux/if_packet.h>
  #include <linux/udp.h>
  #include <linux/ip.h>
--#include <linux/ipv6.h>
++#ifdef __GLIBC__
+ #include <linux/ipv6.h>
++#endif
  
  #include <arpa/inet.h>
  #include <sys/types.h>

net/bfdd/patches/010-uclibc.patch

@@ -1,13 +0,0 @@
-diff --git a/bfd_packet.c b/bfd_packet.c
-index e8f99f9..2c9fa91 100644
---- a/bfd_packet.c
-+++ b/bfd_packet.c
-@@ -29,6 +29,8 @@
- #define _UAPI_IPV6_H
- #endif /* _UAPI_IPV6_H */
- 
-+#define _GNU_SOURCE
-+
- #include <linux/filter.h>
- #include <linux/if_ether.h>
- #include <linux/if_packet.h>