ubox: make logread as an alternative

The logread can be replaced with syslog-ng.
To support this it should be an alternative itself.

Signed-off-by: Sergey Ponomarev <[email protected]>

package/system/ubox/Makefile

@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ubox
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/ubox.git
@@ -47,6 +47,7 @@ define Package/logd
   DEPENDS:=+libubox +libubus +libblobmsg-json +libudebug
   TITLE:=OpenWrt system log implementation
   USERID:=logd=514:logd=514
+  ALTERNATIVES:=200:/sbin/logread:/usr/libexec/logread-ubox
 endef
 
 define Package/getrandom/install
@@ -63,9 +64,10 @@ define Package/ubox/install
 endef
 
 define Package/logd/install
-	$(INSTALL_DIR) $(1)/sbin $(1)/etc/init.d/ $(1)/usr/share/acl.d
+	$(INSTALL_DIR) $(1)/sbin $(1)/usr/libexec/ $(1)/etc/init.d/ $(1)/usr/share/acl.d
 
-	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/{logd,logread} $(1)/sbin/
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/logd $(1)/sbin/
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/logread $(1)/usr/libexec/logread-ubox
 	$(INSTALL_BIN) ./files/log.init $(1)/etc/init.d/log
 	$(INSTALL_DATA) ./files/logd.json $(1)/usr/share/acl.d
 endef