attr: update to 20150220

Signed-off-by: Maxim Storchak <m.storchak@gmail.com>

utils/attr/Makefile

@@ -8,8 +8,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=attr
-PKG_REV:=c4a7fdbcc109d6e8b465a427c714926fcb85c750
-PKG_VERSION:=20141020
+PKG_REV:=c252ef434219891f616d891b46aad6b06efdd185
+PKG_VERSION:=20150220
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz