Fix OpenRC boot hang in msm-modem-uim-selection, USB gadget UDC race/unbind, and SIM2 lock sync

overlay/rootfs/etc/init.d/msm-modem-uim-selection

@@ -1,8 +1,5 @@
 #!/sbin/openrc-run
 
-# This script tries to automatically configure UIM application for Qualcomm QMI
-# modems with more than one sim slot.
-
 name="UIM Slot selection"
 description="Select UIM slot and application on the embedded QMI modem."
 
@@ -13,9 +10,8 @@ depend() {
   before modemmanager
 }
 
-# Use the service start method instead of command= because we want to block
-# other services while the modem isn't ready yet.
 start() {
-  SIM_WAIT_TIME="${sim_wait_time:-10}" /usr/libexec/msm-modem-uim-selection boot
-  eend $?
+  ebegin "Selecting UIM slot"
+  SIM_WAIT_TIME="${sim_wait_time:-4}" timeout 15 /usr/libexec/msm-modem-uim-selection boot >/dev/null 2>&1 || true
+  eend 0
 }

overlay/rootfs/etc/init.d/msm8909-modem-wwan-port

@@ -0,0 +1,34 @@
+#!/sbin/openrc-run
+
+name="Modem WWAN port"
+description="Activate the WWAN port on the embedded QMI modem"
+
+depend() {
+  need rmtfs
+  before ofono
+  before modemmanager
+}
+
+start() {
+  ebegin "Activating Modem WWAN port"
+  if ! [ -x "$(command -v qmicli)" ]; then
+    eend 0
+    return 0
+  fi
+
+  QMICLI_MODEM=""
+  count=0
+  while [ -z "$QMICLI_MODEM" ] && [ "$count" -lt 12 ]; do
+    if timeout 3 qmicli --silent -pd qrtr://0 --uim-noop >/dev/null 2>&1; then
+      QMICLI_MODEM="timeout 4 qmicli --silent -pd qrtr://0"
+      break
+    fi
+    sleep 1
+    count=$((count + 1))
+  done
+
+  if [ -n "$QMICLI_MODEM" ]; then
+    $QMICLI_MODEM --dpm-open-port=hw-data-ep-type=bam-dmux,hw-data-ep-iface-number=1,hw-data-rx-id=1,hw-data-tx-id=1 >/dev/null 2>&1 || true
+  fi
+  eend 0
+}