zerotier: add patch to avoid including sys/auxv.h

It seems it's not needed and not supported under uClibc-ng.

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

net/zerotier/patches/0003-remove-arm32-conservative-CFLAGS.patch

@@ -7,8 +7,6 @@ Subject: [PATCH 3/8] remove arm32 conservative CFLAGS
  make-linux.mk | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
-diff --git a/make-linux.mk b/make-linux.mk
-index bd05e6b5..b1bb638e 100644
 --- a/make-linux.mk
 +++ b/make-linux.mk
 @@ -276,7 +276,7 @@ ifeq ($(ZT_CONTROLLER),1)
@@ -20,6 +18,3 @@ index bd05e6b5..b1bb638e 100644
  	ifeq ($(shell if [ -e /usr/bin/dpkg ]; then dpkg --print-architecture; fi),armel)
  		override CFLAGS+=-march=armv5t -mfloat-abi=soft -msoft-float -mno-unaligned-access -marm
  		override CXXFLAGS+=-march=armv5t -mfloat-abi=soft -msoft-float -mno-unaligned-access -marm
--- 
-2.29.2
-