iproute2: always use -DHAVE_SETNS, since the old uclibc is gone now

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 47358

package/network/utils/iproute2/Makefile

@@ -78,16 +78,7 @@ define Build/Configure
 		> $(PKG_BUILD_DIR)/include/SNAPSHOT.h
 endef
 
-ifdef CONFIG_USE_GLIBC
-  TARGET_CFLAGS += -DHAVE_SETNS
-endif
-ifdef CONFIG_USE_MUSL
-  TARGET_CFLAGS += -DHAVE_SETNS
-endif
-ifdef CONFIG_UCLIBC_USE_VERSION_NG
-  TARGET_CFLAGS += -DHAVE_SETNS
-endif
-
+TARGET_CFLAGS += -DHAVE_SETNS
 TARGET_CFLAGS += -ffunction-sections -fdata-sections
 
 MAKE_FLAGS += \