flash_ec: Add support for it83xx_evb

Add it83xx_evb support in flash_ec script.

BRANCH=none
BUG=none
TEST=Test OK on ITE8390CX.
     You can run
     "~/trunk/src/platform/ec/util/flash_ec --board=it83xx_evb --image=./build/it8380dev/ec.bin"

/* ==SNAPSHOT START== */
(cr) (flashec) donald@donald-nb ~/trunk/src/platform/ec $ ~/trunk/src/platform/ec/util/flash_ec --board=it83xx_evb --image=./build/it8380dev/ec.bin
INFO: Using ec image : ./build/it8380dev/ec.bin
INFO: Flashing chip it83xx.
Waiting for the EC power-on sequence ...CHIPID 8390, CHIPVER 82, Flash size 256 kB
Done.
CHIPID 8390, CHIPVER 82, Flash size 256 kB
Erasing chip...
/100%
Writing 262144 bytes at 0x00000000
Done.
Verify 262144 bytes at 0x00000000
-100%
Verify Done.
INFO: Flashing done.

/* ==SNAPSHOT END== */

Change-Id: I0a76c0ccfcc3726796372ba3b7915a41c64d5766
Signed-off-by: Donald Huang <donald.huang@ite.com.tw>
Reviewed-on: https://chromium-review.googlesource.com/343985
Reviewed-by: Randall Spangler <rspangler@chromium.org>

util/flash_ec

@@ -44,6 +44,11 @@ die() {
 	exit 1
 }
 
+
+BOARDS_IT83XX=(
+	it83xx_evb
+)
+
 BOARDS_LM4=(
 	auron
 	rambi
@@ -182,6 +187,9 @@ elif $(in_array "${BOARDS_NRF51[@]}" "${BOARD}"); then
 	CHIP="nrf51"
 elif $(in_array "${BOARDS_MEC1322[@]}" "${BOARD}"); then
 	CHIP="mec1322"
+elif $(in_array "${BOARDS_IT83XX[@]}" "${BOARD}"); then
+	CHIP="it83xx"
+	NEED_SERVO="no"
 elif [ -n "${FLAGS_chip}" ]; then
 	CHIP="${FLAGS_chip}"
 else
@@ -539,6 +547,16 @@ function flash_stm32_dfu() {
 		$DFU_UTIL -a 0 -s ${ADDR}:${SIZE} -D "${IMG}"
 }
 
+function flash_it83xx() {
+
+	TOOL_PATH="${EC_DIR}/build/${BOARD}/util:$PATH"
+	ITEFLASH=$(PATH="${TOOL_PATH}" which iteflash)
+	if [ ! -x "$ITEFLASH" ]; then
+		die "no iteflash util found."
+	fi
+	sudo ${ITEFLASH} -w ${IMG}
+}
+
 function flash_lm4() {
 	OCD_CHIP_CFG="lm4_chip.cfg"
 	OCD_CMDS="init; flash_lm4 ${IMG} ${FLAGS_offset}; shutdown;"