qtbase-native: explicitly disable icu

* Jonathan Liu reported that qtbase-native was failing to build for him
  and it looks like qtbase-native was trying to link against icu from his
  host (instead of icu-native because it isn't in DEPENDS)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

recipes-qt/qt5/qtbase-native.inc

@@ -51,6 +51,7 @@ EXTRA_OECONF = " \
     -no-opengl \
     -no-openssl \
     -no-xcb \
+    -no-icu \
     -verbose \
     -release \
     -prefix ${OE_QMAKE_PATH_PREFIX} \