tcl/board: Add Infineon XMC4500 Application Kit configs

tcl/board: Add Infineon XMC4500 Application Kit configs

Tested CPU_45A-V2 (General Purpose) with ARM-USB-TINY-H (via SWD) and
with "J-Link Lite-Cortex-M V8 compiled Jul 17 2014 11:40:12" firmware.

Tested CPU_45B-V1-006 (SDRAM) with ARM-USB-TINY-H (via SWD) and
with "J-Link Lite-XMC4200 Rev.1 compiled Jul 18 2014 17:28:26" firmware.

Change-Id: I3451117606551671ec77722f6adf7d7a6a4bd576
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/2481
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>