test: add wp interrupt alias
test: add wp interrupt alias

Add the wp interrupt alias to DT. Additional tests will be added later.

BRANCH=none
BUG=none
TEST=twister

Signed-off-by: Yuval Peress <50dc11c009bd4d7e9d9d15a383c1743ce5ee82ef@google.com>
Change-Id: I552ac33eda5917ab9d7af0d6a460b0b2ae2b1398
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4018172
Reviewed-by: Al Semjonovs <c3a2ecb550cad1e7d5a943ca6241377f7b43ffc4@google.com>
Code-Coverage: Zoss <345cf107e82c70959d46f59d98bddc98ce458aff@prod.google.com>

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