bump buildroot to 2019.02.2

bsp/buildroot/package/x11r7/xserver_xorg-server/1.20.4/0004-include-misc.h-fix-uClibc-build.patch

@@ -0,0 +1,31 @@
+From 2e8fca00f5bdb02f2f59aaa428d1e9d808ab0e86 Mon Sep 17 00:00:00 2001
+From: Bernd Kuhls <bernd.kuhls@t-online.de>
+Date: Sat, 16 Jun 2018 19:20:16 +0200
+Subject: [PATCH] include/misc.h: fix uClibc build
+
+A similar fix was used for Dovecot:
+https://www.dovecot.org/list/dovecot/2017-November/110019.html
+
+Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
+---
+ include/misc.h | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/include/misc.h b/include/misc.h
+index 14920c3c3..390e52b60 100644
+--- a/include/misc.h
++++ b/include/misc.h
+@@ -185,6 +185,10 @@ typedef struct _xReq *xReqPtr;
+ #endif
+ #endif
+ 
++#undef bswap_16
++#undef bswap_32
++#undef bswap_64
++
+ /**
+  * Calculate the number of bytes needed to hold bits.
+  * @param bits The minimum number of bits needed.
+-- 
+2.17.1
+