zephyr: test: isl923x post_init always passes
zephyr: test: isl923x post_init always passes

BRANCH=none
BUG=b:201602829
TEST=zmake configure --test zephyr/test/drivers

Signed-off-by: Yuval Peress <50dc11c009bd4d7e9d9d15a383c1743ce5ee82ef@google.com>
Change-Id: I85f80ad1d8233c1fbefff9ab2124c4c39a3d5062
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3198688
Reviewed-by: Aaron Massey <79529a820df71f45023239a3663736629646cc34@google.com>

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