libuwifi: use autorelease feature

Package version is automatically increased as described here:
https://github.com/openwrt/packages/issues/14537

Signed-off-by: Nick Hainke <vincent@systemli.org>

libs/libuwifi/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libuwifi
 PKG_VERSION:=2020-03-10
-PKG_RELEASE:=4
+PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/br101/libuwifi.git