TCL: Add board file for EVAL_SPEAr320CPU

Initial support for SPEAr320 chip and for evaluation
board named EVAL_SPEAr320CPU.

Change-Id: I85524655769bcc610294a26db47a7a399256fbb7
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/231
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

tcl/chip/st/spear/spear3xx.tcl

@@ -120,3 +120,10 @@ proc sp310_emi_init {} {
 	mww 0x4f000014 0x0000000e	;# control_0_reg
 	mww 0x4f000094 0x0000003f	;# ack_reg
 }
+
+
+# Specific init scripts for ST SPEAr320
+proc sp320_init {} {
+	mww 0xb300000c 0xffffac04	;# RAS function enable
+	mww 0xb3000010 0x00000001	;# RAS mode select
+}