bluez: update to 5.28

Signed-off-by: Nicolas Thill <nico@openwrt.org>

utils/bluez/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=bluez
-PKG_VERSION:=5.27
+PKG_VERSION:=5.28
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=http://www.kernel.org/pub/linux/bluetooth/
-PKG_MD5SUM:=a8fc508690e497e88c2c0b373cd653a8
+PKG_MD5SUM:=bc20a8285530758c68f6a60e4ca62a15
 
 PKG_LICENSE:=GPL-2.0+
 PKG_LICENSE_FILES:=COPYING