OPNSense/tools e987727build arm.sh, config/19.1 SMP-ODROID-XU3 SMP-ORANGEPI-PC2

arm: more device configs (#130)

* Add Orange Pi PC2 device config
* Add Odroid XU3/XU4 device config and update several arm configs
* Update odroid-xu3.conf
DeltaFile
+36-0config/19.1/SMP-ODROID-XU3
+36-0config/19.1/SMP-ORANGEPI-PC2
+11-3build/arm.sh
+11-0device/odroid-xu3.conf
+11-0device/orangepi-pc2.conf
+1-1device/rpi3.conf
+106-46 files

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