zephyr: fix leds behavior on lazor
zephyr: fix leds behavior on lazor

This commit fixes the handling of leds definitions in device tree
and changes the led tick to be 1s instead of default 200ms.
Only the first node of led was set properly, other ones were
causing the read outside of an array.

BUG=b:222684744
BRANCH=main
TEST=flash and check if leds are blinking as they should

Change-Id: Id890261e38b7a61dff4827e0a6f192ad10b6ab32
Signed-off-by: Michał Barnaś <77666125932addc6fc525b281b518fd8fd2203d8@semihalf.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3500522
Reviewed-by: Fabio Baltieri <1c55e39c05d9ab42261288cf330256b2af6ba179@google.com>

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