zephyr: isl923x: Add test for raa489000_enable_asgate()
zephyr: isl923x: Add test for raa489000_enable_asgate()

Write a test for raa489000_enable_asgate()

BRANCH=None
BUG=b:184856906
TEST=zmake -D configure --test test-drivers

Signed-off-by: Tristan Honscheid <1e17951ff5ffc8afe254954c03de64afef62fe52@google.com>
Change-Id: Ib492ef600c3de45cfe93b57bc484f4aa3fe5412b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3327330
Reviewed-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec