imx6q-lxr: Add board support

Add support for the Comvetia i.MX6Q LXR2 board, which is
uses the Phytec PFLA02 SoM.

Based on the original work from Stefano Babic <sbabic@denx.de>.

The Phytec PFLA02 devicetrees are taken from kernel 6.11-rc7.

The imx6q-lxr.dts has been submitted upstream:

https://lore.kernel.org/linux-devicetree/20240913200906.1753458-3-festevam@gmail.com/

After it gets accepted in mainline (most likely in kernel 6.13),
the lxr2 board can then be switched to OF_UPSTREAM and these device trees
can be removed from U-Boot.

Signed-off-by: Fabio Estevam <festevam@denx.de>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 56d4af5..05a00e4 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -812,6 +812,7 @@
 	imx6q-icore-rqs.dtb \
 	imx6q-kp.dtb \
 	imx6q-logicpd.dtb \
+	imx6q-lxr.dtb \
 	imx6q-marsboard.dtb \
 	imx6q-mccmon6.dtb\
 	imx6q-nitrogen6x.dtb \