CHERRY-PICK: altair-lte: set serial port send delay to 0

With a non-zero send delay, the communication over the ttyACM port of
the modem is not very stable when USB auto-suspend is enabled for the
modem. The send delay is not necessary and thus removed by this patch.

Ori Inbar <ori.inbar@altair-semi.com> reported the issue and suggested
this fix.

(cherry picked from commit 48d35ee61049e65b83bf3484a45657a83709b2a1)

Change-Id: I0095bd44537545462b167b9e22bbceb267e76dcb
Reviewed-on: https://gerrit.chromium.org/gerrit/62069
Commit-Queue: Ben Chan <benchan@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
1 file changed