PXA: ZipitZ2 support

This patch adds support for Aeronix Zipit Z2 handheld.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
diff --git a/board/zipitz2/config.mk b/board/zipitz2/config.mk
new file mode 100644
index 0000000..1d650ac
--- /dev/null
+++ b/board/zipitz2/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0xa1000000