rockchip-armv8: add FriendlyARM NanoPi R2S

docs/user/supported_devices.rst

@@ -247,6 +247,13 @@ ramips-rt305x [#deprecated]_  [#device-class-tiny]_
 
   - VoCore (8M, 16M)
 
+rockchip-armv8
+--------------
+
+* FriendlyElec
+
+  - NanoPi R2S
+
 sunxi-cortexa7
 --------------
 

targets/rockchip-armv8

@@ -0,0 +1,6 @@
+defaults {
+	factory = false,
+	sysupgrade_ext = '.img.gz',
+}
+
+device('friendlyelec-nanopi-r2s', 'friendlyarm_nanopi-r2s')

targets/targets.mk

@@ -12,6 +12,7 @@ $(eval $(call GluonTarget,ramips,mt7620))
 $(eval $(call GluonTarget,ramips,mt7621))
 $(eval $(call GluonTarget,ramips,mt76x8))
 $(eval $(call GluonTarget,ramips,rt305x))
+$(eval $(call GluonTarget,rockchip,armv8))
 $(eval $(call GluonTarget,sunxi,cortexa7))
 $(eval $(call GluonTarget,x86,generic))
 $(eval $(call GluonTarget,x86,geode))