PXA: Palm Tungsten|C Support

This patch adds support for the Palm Tungsten|C PXA255 board. The support
includes:
- LCD
- MMC
- UART
- NOR

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