board: Add TI AM335x Evaluation Module

This patch adds the TI AM335x Evaluation Module (ti_am335xevm) board
configuration file.

Change-Id: Id3529e54972f8acd8c790ad55c8d0f4058a1a1f6
Signed-off-by: Tom Rini <trini@ti.com>
Reviewed-on: http://openocd.zylin.com/753


Tested-by: jenkins
Reviewed-by: Peter Stuge <peter@stuge.se>

tcl/board/ti_am335xevm.cfg

+#
+# TI AM335x Evaluation Module
+#
+# For more information please see http://www.ti.com/tool/tmdxevm3358
+#
+jtag_rclk 6000
+
+source [find target/am335x.cfg]
+
+reset_config trst_and_srst