arm64: included docker in source

cyberknight777 · cyberknight777 · commit 600c935fa011 · 2021-07-19T00:18:21.000+08:00
Signed-off-by: Cyber Knight &lt;cyberknight755@gmail.com&gt;
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
@@ -1586,3 +1586,5 @@ source "arch/arm64/crypto/Kconfig"
 endif
 
 source "lib/Kconfig"
+
+source "docker/Kconfig"
