SAM3X - Added support for at91sam3x8h-ES, fixed CIDR for ES2 and production

SAM3X - Added support for at91sam3x8h-ES, fixed CIDR for ES2 and production

The first available devkits for the at91sam3x8h had the ES device populated.
The ES device had an error in the CIDR, specifically in the last byte of
which the upper 3 bits identifies the chip family - cortex-m3, arm7tdmi etc.

The problem was fixed on the ES2 devices - Thanks to Pat Hickey for giving me
the heads-up.

Change-Id: I13dd7fbe0cffaf76f948188c9459dc3cf4435570
Signed-off-by: Olivier Schonken <olivier.schonken@gmail.com>
Reviewed-on: http://openocd.zylin.com/575
Tested-by: jenkins
Reviewed-by: Jim Norris <u17263@att.net>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>