zephyr: tests: Fix test_ps8815_set_cc HW revision
zephyr: tests: Fix test_ps8815_set_cc HW revision

PS8815 set cc test requires specific HW revision to be set in PS8xxx
emulator at the beginning. Some HW revisions introduces delay which may
disturb flow of the test by allowing other tasks to execute at the same
time.

BUG=b:233105090
BRANCH=None
TEST=zmake -D test test-drivers

Signed-off-by: Tomasz Michalec <a547db31280d14f095c760a23a7523d0b1e55fe6@semihalf.com>
Change-Id: I63f197e60d96ee488a3bedddc69de6ba34d069cc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3758212
Tested-by: Tomasz Michalec <c064a6042954d4ba0805003dc021b76413ff1548@google.com>
Reviewed-by: Aaron Massey <79529a820df71f45023239a3663736629646cc34@google.com>
Commit-Queue: Tomasz Michalec <c064a6042954d4ba0805003dc021b76413ff1548@google.com>

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