board: rename it8380dev to it83xx_evb

Unified board name for IT83-series.

Signed-off-by: Dino Li <dino.li@ite.com.tw>

BRANCH=none
BUG=none
TEST="make BOARD=it83xx_evb -j" and "make buildall -j"

Change-Id: Ic96d0132fb31fcc8715d0dd810f8bd340035a640
Reviewed-on: https://chromium-review.googlesource.com/341843
Commit-Ready: Dino Li <dino.li@ite.com.tw>
Tested-by: Dino Li <dino.li@ite.com.tw>
Reviewed-by: Shawn N <shawnn@chromium.org>

Makefile.rules

@@ -13,7 +13,7 @@ build-srcs := $(foreach u,$(build-util-bin),$(sort $($(u)-objs:%.o=util/%.c) uti
 host-srcs := $(foreach u,$(host-util-bin),$(sort $($(u)-objs:%.o=util/%.c) util/$(u).c))
 
 # Don't do a build test on the following boards:
-skip_boards = OWNERS host it8380dev
+skip_boards = OWNERS host it83xx_evb
 boards := $(filter-out $(skip_boards),$(notdir $(wildcard board/* private*/board/*)))
 
 # Create output directories if necessary