rtl-ais: Update init script

This replaces the use of uci_validate_section() with
uci_load_validate(), which removes the need to declare local variables
for every config option.

This also fixes some space-indented lines to use tabs.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

utils/rtl-ais/Makefile

@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rtl-ais
 PKG_VERSION:=0.3
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/dgiardini/rtl-ais/tar.gz/v$(PKG_VERSION)?