ipq40xx: add support for Telco X1 Pro

Telco X1 Pro is a Cat12 LTE-A Pro modem router.
Vendor firmware is based on a recent version of OpenWrt.
Flashing is possible via CLI using sysupgrade -F -n
The serial headers allow bootloader and console access
Serial setting: 115200  8N1

Brief Specifications:
IPQ4019 SoC
32MB flash
512MB RAM
4x gigabit LAN
1x gigabit WAN
Dual-band Wave-2 wifi
2x SMA LTE antenna connectors
2x RP-SMA wifi antennas
1x USB 2.0 port
1x Reset button
Serial headers installed
1x Nano SIM tray
1x Quectel EM-12G LTE-A Pro modem
1x M.2 slot attached to USB 3.0
1x internal micro SD card slot

Signed-off-by: Nicholas Smith <nicholas@nbembedded.com>

target/linux/ipq40xx/patches-5.10/901-arm-boot-add-dts-files.patch

@@ -10,7 +10,7 @@ Signed-off-by: John Crispin <john@phrozen.org>
 
 --- a/arch/arm/boot/dts/Makefile
 +++ b/arch/arm/boot/dts/Makefile
-@@ -903,11 +903,74 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+@@ -903,11 +903,75 @@ dtb-$(CONFIG_ARCH_QCOM) += \
  	qcom-apq8074-dragonboard.dtb \
  	qcom-apq8084-ifc6540.dtb \
  	qcom-apq8084-mtp.dtb \
@@ -71,6 +71,7 @@ Signed-off-by: John Crispin <john@phrozen.org>
 +	qcom-ipq4019-rtl30vw.dtb \
 +	qcom-ipq4019-srr60.dtb \
 +	qcom-ipq4019-srs60.dtb \
++	qcom-ipq4019-x1pro.dtb \
 +	qcom-ipq4019-u4019-32m.dtb \
 +	qcom-ipq4019-wpj419.dtb \
 +	qcom-ipq4019-wtr-m2133hp.dtb \