This part has 16k ram so make it all available.
Change-Id: Ifeb7bc850bfe4f68d0affb8f6a0931b4327e7257
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1006
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>