oak: Fix issue with pc_send_ec_int() function
oak: Fix issue with pc_send_ec_int() function

There was a bug in this function where the bit for host_command was
being set in the ec_status variable. This caused the ALERT# GPIO
line to be held low which in turn caused the EC MCU to loop
and keep reading the ALERT register.

BUG=none
BRANCH=none
TEST=manual Tested against Zinger in both ports and Zinger and Samus
at connected into each port. Verified that it established a PD contract
for both ports and that the alert line was no longer being held low

Change-Id: I5540440a68581521eb002411f728a4eac2f22caf
Signed-off-by: Scott Collyer <7d40b3eb9e17bf55d972074a5e77a7ea4159f9dd@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/288252
Reviewed-by: Alec Berg <1a4429eeda29095a12e19a73405f80f5b7f37a63@chromium.org>
Commit-Queue: Alec Berg <1a4429eeda29095a12e19a73405f80f5b7f37a63@chromium.org>
Tested-by: Alec Berg <1a4429eeda29095a12e19a73405f80f5b7f37a63@chromium.org>

fourier49/BIZ_EC,fourier49/BIZ_EC,fourier49/BIZ_EC,fourier49/BIZ_EC