app: scripts: Add a bit more time for device to boot

Change timeout for "AT" "OK" to 2s in case device just booted up.

Signed-off-by: Seppo Takalo <seppo.takalo@nordicsemi.no>

Author: SeppoTakalo

app/scripts/sm2_ppp_dial.chat

@@ -21,7 +21,7 @@ ABORT +CNEC_ESM:
 #
 # Check AT channel
 #
-TIMEOUT 1
+TIMEOUT 2
 ''
 AT OK