set higher timeout for autobuilder, which is behind a proxy

mk/build.mk

@@ -12,6 +12,7 @@ CONFIG_CONFIG_IN = Config.in
 CONFIG = config
 DEFCONFIG=		ADK_DEBUG=n \
 			ADK_STATIC=n \
+			ADK_WGET_TIMEOUT=180 \
 			ADK_MAKE_PARALLEL=y \
 			ADK_MAKE_JOBS=4 \
 			ADK_LEAVE_ETC_ALONE=n \