Use fonts from generic device for the SDK.

This removes the explicit list of fonts for the SDK and replaces it with
the fonts built for the generic device.

Also, the symlinked fonts are copied becuase Windows doesn't support
symlinks.

Change-Id: I8b18b2ab0149ab24448f27dbd5f9716e5d360029
diff --git a/target/board/generic/BoardConfig.mk b/target/board/generic/BoardConfig.mk
index 62303d6..3ae5860 100644
--- a/target/board/generic/BoardConfig.mk
+++ b/target/board/generic/BoardConfig.mk
@@ -87,3 +87,8 @@
         shell.te \
         surfaceflinger.te \
         system_server.te
+
+ifeq ($(TARGET_PRODUCT),sdk)
+  # include an expanded selection of fonts for the SDK.
+  EXTENDED_FONT_FOOTPRINT := true
+endif