add support ota

hc

2023-02-18 a08c8b75ee83d7f62c9aefc23bfb42082aa4076c

 device/rockchip/common/build.sh
..
..
@@ -1083,7 +1083,12 @@
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 		else
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 			./mkupdate.sh
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 		fi
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-		mv update.img $IMAGE_PATH
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+ 	        md5sum update.img >update.img.md5
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+                zip update.zip update.img update.img.md5
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+                md5sum update.zip > update.zip.md5
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+                mv update.img $IMAGE_PATH
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+                mv update.zip $IMAGE_PATH
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+                mv update.zip.md5 $IMAGE_PATH
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 	fi
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 	finish_build